User:Drsalmanshah165/Books/Offline Medical Wikipedia 0-Z

By Kmcpesh

 * 17-beta-hydroxysteroid dehydrogenase deficiency
 * 17q21.31 microdeletion syndrome
 * 1p36 deletion syndrome
 * 2-Hydroxyglutaric aciduria
 * 2q37 monosomy
 * 3 hydroxyisobutyric aciduria
 * 3-hydroxy-3-methylglutaryl-CoA lyase deficiency
 * 3-hydroxyacyl-coenzyme A dehydrogenase deficiency
 * 3-M syndrome
 * 3-Methylcrotonyl-CoA carboxylase deficiency
 * 3-Methylglutaconic aciduria
 * 3C syndrome
 * 48, XXXX
 * 49, XXXXX
 * 49, XXXXY syndrome
 * 5-alpha-reductase deficiency
 * 6-Pyruvoyltetrahydropterin synthase deficiency
 * 8p23.1 duplication syndrome
 * 9q34 deletion syndrome
 * Aagenaes syndrome
 * Aarskog–Scott syndrome
 * Aase syndrome
 * Abasia
 * ABCD syndrome
 * Abdallat–Davis–Farrage syndrome
 * Abdominal adhesion
 * Abdominal aortic aneurysm
 * Abdominal cramps
 * Abdominal hernia
 * Abdominal migraine
 * Abdominal musculature absent with microphthalmia and joint laxity
 * Abdominal pain
 * Abdominal wall defect
 * Abdominoplasty
 * Aberrant subclavian artery
 * Ablation
 * Ablation of atrial fibrillation
 * Ablative brain surgery
 * Ablepharon macrostomia syndrome
 * Abortion
 * Abrasion
 * Abrasion (dental)
 * Abrasion (geology)
 * Abrasion (mechanical)
 * Abrasion (medical)
 * Abruzzo–Erickson syndrome
 * Abscess
 * Absence of gluteal muscle
 * Absence seizure
 * Abyssinian tea
 * Acanthocheilonemiasis
 * Acanthocyte
 * Acanthosis nigricans
 * Acatalasia
 * Accessory navicular bone
 * Accessory pancreas
 * Achalasia
 * Achard syndrome
 * Achard–Thiers syndrome
 * Ache
 * Acheiropodia
 * Achilles tendon
 * Achilles tendon rupture
 * Achondrogenesis
 * Achondrogenesis type 1B
 * Achondrogenesis type 2
 * Achondroplasia
 * Achondroplastic dwarfism
 * Achromatopsia
 * Acitretin
 * Ackerman syndrome
 * Acne aestivalis
 * Acne conglobata
 * Acne cosmetica
 * Acne fulminans
 * Acne keloidalis nuchae
 * Acne mechanica
 * Acne medicamentosa
 * Acne miliaris necrotica
 * Acne scars
 * Acne vulgaris
 * Acne with facial edema
 * Acneiform eruption
 * Acneiform rash
 * Acoustic neuroma
 * Acquired brain injury
 * Acquired Epileptic Aphasia (landau-kleffner syndrome)
 * Acrocallosal syndrome
 * Acrochordon
 * Acrocyanosis
 * Acrodermatitis
 * Acrodermatitis enteropathica
 * Acrodysostosis
 * Acrofrontofacionasal dysostosis
 * Acrogeria
 * Acrokeratoelastoidosis of Costa
 * Acromegaly
 * Acromicric dysplasia
 * Acropectoral syndrome
 * Acrophobia
 * Acrospiroma
 * Actinic keratosis
 * Actinism
 * Actinomycosis
 * Activated protein C resistance
 * Acupuncture
 * Acute (medicine)
 * Acute compartment syndrome
 * Acute hepatitis B
 * Acute intermittent porphyria
 * Acute kidney failure
 * Acute kidney injury
 * Acute lung injury
 * Acute lymphoblastic leukemia
 * Acute lymphocytic leukemia
 * Acute megakaryoblastic leukemia
 * Acute monocytic leukemia
 * Acute myeloblastic leukemia
 * Acute myeloblastic leukemia with maturation
 * Acute myeloblastic leukemia without maturation
 * Acute myeloid leukemia
 * Acute myeloid leukemia M7
 * Acute myelomonocytic leukemia
 * Acute necrotizing ulcerative gingivitis
 * Acute pancreatitis
 * Acute porphyria
 * Acute posterior multifocal placoid pigment epitheliopathy
 * Acute promyelocytic leukemia
 * Acute radiation syndrome
 * Acute respiratory distress syndrome
 * Acute tubular necrosis
 * Adams–Nance syndrome
 * Adams–Oliver syndrome
 * Addison's disease
 * Adducted thumb syndrome
 * Adenine phosphoribosyltransferase deficiency
 * Adenocarcinoma of the lung
 * Adenoid
 * Adenoid basal cell carcinoma
 * Adenoid cystic carcinoma
 * Adenoid hypertrophy
 * Adenoid seborrheic keratosis
 * Adenoid squamous-cell carcinoma
 * Adenoidectomy
 * Adenoiditis
 * Adenoids
 * Adenoma
 * Adenomatous polyposis coli
 * Adenomyosis
 * Adenosine
 * Adenosine deaminase deficiency
 * Adenosine Monophosphate Deaminase Deficiency type 1
 * Adenovirus infection
 * Adenylosuccinate lyase deficiency
 * Adhesion (medicine)
 * Adie syndrome
 * Adiposis dolorosa
 * Adiposogenital dystrophy
 * Adolescence
 * Adrenal gland
 * Adrenal gland disorder
 * Adrenal insufficiency
 * Adrenal tumor
 * Adrenocortical carcinoma
 * Adrenocortical hyperfunction
 * Adrenocorticotropic hormone deficiency
 * Adrenoleukodystrophy
 * Adult attention deficit hyperactivity disorder
 * Adult Brain Tumor
 * Adult stem cell
 * Adult-onset diabetes
 * Adult-onset Still's disease
 * Advanced sleep phase disorder
 * Aerosinusitis
 * Affordable Care Act
 * African iron overload
 * African trypanosomiasis
 * Afro-textured hair
 * Aganglionosis
 * Age spots
 * Age-related macular degeneration
 * Agenesis of the corpus callosum
 * Ageusia
 * Aggressive fibromatosis
 * Agnosia
 * Agoraphobia
 * Agranulocyte
 * Agranulocytosis
 * Agraphia
 * Agraphobia
 * Aicardi syndrome
 * Aicardi–Goutières syndrome
 * Aichmophobia
 * AIDS-related lymphoma
 * Ainhum
 * Airsickness
 * Airsickness bag
 * ALAD porphyria
 * Alagille syndrome
 * Alanine transaminase
 * Albinism
 * Albinism–deafness syndrome
 * Albright's hereditary osteodystrophy
 * Alcaptonuria
 * Alcohol abuse
 * Alcohol dependence
 * Alcohol dependence syndrome
 * Alcohol intoxication
 * Alcohol poisoning
 * Alcohol withdrawal syndrome
 * Alcohol-related dementia
 * Alcoholic hepatitis
 * Alcoholism
 * Aldolase A deficiency
 * Alice in Wonderland syndrome
 * Alkaptonuria
 * Allan–Herndon–Dudley syndrome
 * Allergen immunotherapy
 * Allergic asthma
 * Allergic bronchopulmonary aspergillosis
 * Allergic conjunctivitis
 * Allergic contact dermatitis
 * Allergic granulomatosis
 * Allergic purpura
 * Allergic reaction
 * Allergic reactions to anaesthesia
 * Allergic rhinitis
 * Allergy
 * Allergy shots
 * Alopecia areata
 * Alopecia areata totalis
 * Alopecia areata universalis
 * Alopecia contractures dwarfism mental retardation
 * Alopecia totalis
 * Alopecia universalis
 * Alpers' disease
 * Alpha 1-antitrypsin deficiency
 * Alpha-1 antitrypsin deficiency panniculitis
 * Alpha-1 proteinase inhibitor
 * Alpha-1 related emphysema
 * Alpha-fetoprotein
 * Alpha-galactosidase
 * Alpha-galactosidase A deficiency
 * Alpha-mannosidosis
 * Alpha-thalassemia
 * Alpha-thalassemia mental retardation syndrome
 * Alport syndrome
 * ALS
 * Alström syndrome
 * ALT test
 * Alternating hemiplegia
 * Alternating hemiplegia of childhood
 * Altitude sickness
 * Alveolar capillary dysplasia
 * Alveolar hydatid disease
 * Alveolar osteitis
 * Alveolar rhabdomyosarcoma
 * Alveolar soft part sarcoma
 * Alzheimer's disease
 * Amblyopia
 * Amelia (birth defect)
 * Amelogenesis
 * Amelogenesis imperfecta
 * Amenorrhoea
 * American trypanosomiasis
 * Amino acid
 * Aminolevulinic acid dehydratase deficiency porphyria
 * AML
 * Amnesia
 * Amnesic shellfish poisoning
 * Amniocentesis
 * Amniotic band constriction
 * Amniotic fluid
 * Amoebiasis
 * Amyloid
 * Amyloidosis
 * Amyloidosis, familial
 * Amyotrophic lateral sclerosis
 * Anal cancer
 * Anal fissure
 * Anal fistula
 * Anal itching
 * Anaphylactoid purpura
 * Anaphylaxis
 * Anaplasmosis
 * Anaplastic large-cell lymphoma
 * Anaplastic thyroid cancer
 * Androgen insensitivity syndrome
 * Anemia
 * Anencephaly
 * Aneurysm
 * Aneurysm of heart
 * Aneurysm of sinus of Valsalva
 * Angioedema
 * Angioimmunoblastic T-cell lymphoma
 * Angiolipoma
 * Angioma
 * Angiomatosis
 * Angiosarcoma
 * Angiostrongyliasis
 * Aniridia
 * Aniridia ataxia renal agenesis psychomotor retardation
 * Anisakis
 * Ankylosing spondylitis
 * Ankylosis
 * Annular pancreas
 * Annuloaortic ectasia
 * Anodontia
 * Anomic aphasia
 * Anonychia
 * Anophthalmia
 * Anorchia
 * Anorexia nervosa
 * Anorgasmia
 * Anotia
 * Anterior horn disease
 * Anterior segment mesenchymal dysgenesis
 * Anterograde amnesia
 * Anthrax
 * Anti-mitochondrial antibody
 * Anti-nuclear antibody
 * Antimitochondrial antibody
 * Antinuclear antibody
 * Antiphospholipid syndrome
 * Antisocial personality disorder
 * Antisynthetase syndrome
 * Antithrombin
 * Antley–Bixler syndrome
 * Anton–Babinski syndrome
 * Aortic aneurysm
 * Aortic dissection
 * Aortic valve stenosis
 * Aortic window
 * Apert syndrome
 * Aphalangia
 * Aphthous stomatitis
 * Aplasia
 * Aplasia cutis congenita
 * Aplastic anemia
 * Apparent mineralocorticoid excess syndrome
 * Appendicitis
 * Apraxia
 * Apudoma
 * Aqueductal stenosis
 * Arachnodactyly
 * Arachnoid cyst
 * Arachnoiditis
 * Arakawa's syndrome II
 * Arbovirus
 * Ardalan–Shoja–Kiuru syndrome
 * ARDS
 * AREDYLD syndrome
 * Argentine hemorrhagic fever
 * Argininemia
 * Argininosuccinic aciduria
 * Arnold–Chiari malformation
 * Aromatase deficiency
 * Aromatase excess syndrome
 * Arrhinia
 * Arrhythmogenic right ventricular dysplasia
 * Arsenic poisoning
 * Arterial tortuosity syndrome
 * Arteriovenous malformation
 * Arteritis
 * Arthritis
 * Arthrogryposis
 * Arthrogryposis–renal dysfunction–cholestasis syndrome
 * Ascariasis
 * Ascher's syndrome
 * Ascites
 * Aseptic meningitis
 * Asherman's syndrome
 * Ashman phenomenon
 * Aspartylglucosaminuria
 * Asperger syndrome
 * Aspergillosis
 * Asphyxiating thoracic dysplasia
 * Asplenia
 * Asplenia with cardiovascular anomalies
 * Astasia-abasia
 * Astasis
 * Asthma
 * Astigmatism (eye)
 * Astraphobia
 * Astrocytoma
 * Astrovirus
 * Asymmetric crying facies
 * Ataxia
 * Ataxia telangiectasia
 * Atelectasis
 * Atelosteogenesis, type II
 * Atherosclerosis
 * Athetosis
 * Athlete's foot
 * Atopic dermatitis
 * Atresia
 * Atrial myxoma
 * Atrial septal defect
 * Atrioventricular fistula
 * Atrioventricular septal defect
 * Atrophic vaginitis
 * Atrophoderma
 * Atrophy
 * Attention deficit hyperactivity disorder
 * Atypical pneumonia
 * Auditory brainstem response
 * Auditory processing disorder
 * Autism
 * Autoimmune hemolytic anemia
 * Autoimmune hepatitis
 * Autoimmune polyendocrine syndrome
 * Autoimmune polyendocrine syndrome type 1
 * Autoimmune polyendocrine syndrome type 2
 * Autosomal dominant polycystic kidney
 * Autosomal recessive polycystic kidney
 * Avascular necrosis
 * Avoidant personality disorder
 * Ayazi syndrome
 * B-cell chronic lymphocytic leukemia
 * Babesiosis
 * Bacillus cereus
 * Bacterial pneumonia
 * Bacterial vaginosis
 * Balantidiasis
 * Bangstad syndrome
 * Bannayan–Riley–Ruvalcaba syndrome
 * Banti's syndrome
 * Barbiturate dependence
 * Barbiturate overdose
 * Bardet–Biedl syndrome
 * Bare lymphocyte syndrome
 * Bare lymphocyte syndrome 2
 * Baritosis
 * Barrett's esophagus
 * Barth syndrome
 * Bartonella
 * Bartter syndrome
 * Basal ganglia disease
 * Basal-cell carcinoma
 * Bathophobia
 * Batten disease
 * Bauxite fibrosis
 * Bazex–Dupré–Christol syndrome
 * Becker's muscular dystrophy
 * Becker's nevus
 * Beckwith–Wiedemann syndrome
 * Behr syndrome
 * Behçet's disease
 * Bell's palsy
 * Benign familial neonatal seizures
 * Benign fasciculation syndrome
 * Benign fibrous histiocytoma
 * Benign lymphoepithelial lesion
 * Benign paroxysmal positional vertigo
 * Benign symmetric lipomatosis
 * Benzodiazepine dependence
 * Benzodiazepine overdose
 * Benzodiazepine withdrawal syndrome
 * Berdon syndrome
 * Beriberi
 * Bernard–Soulier syndrome
 * Berylliosis
 * Beta thalassemia
 * Beta-ketothiolase deficiency
 * Beta-mannosidosis
 * Bethlem myopathy
 * Bhaskar–Jagannathan syndrome
 * Bicuspid aortic valve
 * Biemond syndrome
 * Biliary atresia
 * Bilirubin
 * Binder's syndrome
 * Binswanger's disease
 * Biotin deficiency
 * Biotinidase deficiency
 * Bipolar disorder
 * Bipolar I disorder
 * Bipolar II disorder
 * Birdshot chorioretinopathy
 * Birt–Hogg–Dubé syndrome
 * Björnstad syndrome
 * BK virus
 * Black Death
 * Black hairy tongue
 * Black piedra
 * Bladder cancer
 * Bladder exstrophy
 * Blastoma
 * Blastomycosis
 * Blepharitis
 * Blepharophimosis
 * Blepharophyma
 * Blepharospasm
 * Blood phobia
 * Bloom syndrome
 * Blount's disease
 * Blue diaper syndrome
 * Blue rubber bleb nevus syndrome
 * Body dysmorphic disorder
 * Boil
 * Bolivian hemorrhagic fever
 * Bone
 * Bone marrow failure
 * Bone tumor
 * Boomerang dysplasia
 * Borderline personality disorder
 * Bothrops lanceolatus
 * Botulism
 * Bovine spongiform encephalopathy
 * Bowen's disease
 * Bowenoid papulosis
 * Brachydactyly
 * Brain tumor
 * Branchio-oculo-facial syndrome
 * Branchio-oto-renal syndrome
 * Brazilian hemorrhagic fever
 * Breast cancer
 * Brief psychotic disorder
 * Bright's disease
 * Bronchiectasis
 * Bronchiolitis obliterans
 * Bronchiolitis obliterans organizing pneumonia
 * Bronchitis
 * Bronchopulmonary dysplasia
 * Brown's syndrome
 * Brown-Séquard syndrome
 * Brucellosis
 * Bruck syndrome
 * Brunner syndrome
 * Bubonic plague
 * Budd–Chiari syndrome
 * Bulimia nervosa
 * Bullous pemphigoid
 * Bunion
 * Burkitt's lymphoma
 * Burning mouth syndrome
 * Bursitis
 * Buruli ulcer
 * Buschke–Ollendorff syndrome
 * Byssinosis
 * CADASIL syndrome
 * Caffeine-induced sleep disorder
 * Café au lait spot
 * Calcinosis cutis
 * Calciphylaxis
 * Calculus (medicine)
 * CAMFAK syndrome
 * Campylobacteriosis
 * Camurati–Engelmann disease
 * Canavan disease
 * Cancer
 * Candida (fungus)
 * Candidiasis
 * Canga's bead symptom
 * Canine distemper
 * Cannabis dependence
 * Capillary leak syndrome
 * Caplan's syndrome
 * Carcinoid syndrome
 * Cardiac amyloidosis
 * Cardiac arrest
 * Cardiac dysrhythmia
 * Cardiac tamponade
 * Cardiofaciocutaneous syndrome
 * Cardiomyopathy
 * Caregiver syndrome
 * Carney complex
 * Carnitine palmitoyltransferase I deficiency
 * Carnitine palmitoyltransferase II deficiency
 * Carnitine-acylcarnitine translocase deficiency
 * Carnosinemia
 * Caroli disease
 * Carotenosis
 * Carotid artery dissection
 * Carpal tunnel syndrome
 * Carpenter syndrome
 * Cartilage–hair hypoplasia
 * Castleman's disease
 * Cat eye syndrome
 * Cat scratch disease
 * Cataract
 * Catecholaminergic polymorphic ventricular tachycardia
 * Catel–Manzke syndrome
 * Caudal regression syndrome
 * Cavernous hemangioma
 * Cavernous sinus thrombosis
 * Cenani–Lenz syndactylism
 * Central core disease
 * Central serous retinopathy
 * Centronuclear myopathy
 * Cerebellar hypoplasia
 * Cerebral amyloid angiopathy
 * Cerebral arteriovenous malformation
 * Cerebral hypoxia
 * Cerebral palsy
 * Cerebrotendineous xanthomatosis
 * Cervical cancer
 * Chagas disease
 * Chalazion
 * Chancroid
 * Charcot disease
 * Charcot–Marie–Tooth disease
 * CHARGE syndrome
 * Cheilitis
 * Chemophobia
 * Cherubism
 * Chickenpox
 * Chikungunya
 * Chilblains
 * Child abuse
 * Child sexual abuse
 * CHILD syndrome
 * Childhood amnesia
 * Childhood disintegrative disorder
 * Chimera (genetics)
 * Chlamydia infection
 * Chlamydia trachomatis
 * Chlamydophila pneumoniae
 * Cholangiocarcinoma
 * Cholecystitis
 * Cholemia
 * Cholera
 * Cholestasis
 * Cholesteryl ester storage disease
 * Chondroblastoma
 * Chondrocalcinosis
 * Chondrodysplasia punctata
 * Chondrodystrophy
 * Chondroma
 * Chondromalacia patellae
 * Chondrosarcoma
 * Chordoma
 * Chorea
 * Chorea acanthocytosis
 * Choriocarcinoma
 * Chorioretinitis
 * Choroid plexus cyst
 * Choroid plexus papilloma
 * Choroideremia
 * Chromhidrosis
 * Chromoblastomycosis
 * Chromosome 15q partial deletion
 * Chromosome 15q trisomy
 * Chromosome 5q deletion syndrome
 * Chronic fatigue syndrome
 * Chronic granulomatous disease
 * Chronic inflammatory demyelinating polyneuropathy
 * Chronic kidney disease
 * Chronic mountain sickness
 * Chronic myelogenous leukemia
 * Chronic myelomonocytic leukemia
 * Chronic obstructive pulmonary disease
 * Chronic progressive external ophthalmoplegia
 * Chronic recurrent multifocal osteomyelitis
 * Churg–Strauss syndrome
 * Chédiak–Higashi syndrome
 * Cicatricial pemphigoid
 * Ciguatera
 * Cinchonism
 * Cirrhosis
 * Citrullinemia
 * Cleft lip and palate
 * Cleidocranial dysostosis
 * Cloacal exstrophy
 * Clouston's hidrotic ectodermal dysplasia
 * Club foot
 * Cluster headache
 * Coagulopathy
 * Coalworker's pneumoconiosis
 * Coarctation of the aorta
 * Coats' disease
 * Cocaine dependence
 * Cocaine intoxication
 * Coccidioidomycosis
 * Cockayne syndrome
 * Coeliac disease
 * Coffin–Lowry syndrome
 * Coffin–Siris syndrome
 * Cogan syndrome
 * Cohen syndrome
 * Cold agglutinin disease
 * Cold antibody hemolytic anemia
 * Cold urticaria
 * Colitis
 * Collagenous colitis
 * Coloboma
 * Color blindness
 * Colorado tick fever
 * Colorectal cancer
 * Combined hyperlipidemia
 * Common cold
 * Common variable immunodeficiency
 * Compartment syndrome
 * Complement component 2
 * Complement receptor 1
 * Complex regional pain syndrome
 * Conduct disorder
 * Conductive hearing loss
 * Condylomata lata
 * Cone dystrophy
 * Congenital absence of the vas deferens
 * Congenital adrenal hyperplasia
 * Congenital adrenal hyperplasia due to 11β-hydroxylase deficiency
 * Congenital adrenal hyperplasia due to 17 alpha-hydroxylase deficiency
 * Congenital adrenal hyperplasia due to 21-hydroxylase deficiency
 * Congenital adrenal hyperplasia due to 3 beta-hydroxysteroid dehydrogenase deficiency
 * Congenital afibrinogenemia
 * Congenital amputation
 * Congenital cataract
 * Congenital contractural arachnodactyly
 * Congenital cytomegalovirus infection
 * Congenital diaphragmatic hernia
 * Congenital disorder of glycosylation
 * Congenital dyserythropoietic anemia
 * Congenital dyserythropoietic anemia type I
 * Congenital dyserythropoietic anemia type II
 * Congenital dyserythropoietic anemia type III
 * Congenital fiber type disproportion
 * Congenital generalized lipodystrophy
 * Congenital heart defect
 * Congenital hemolytic anemia
 * Congenital hepatic fibrosis
 * Congenital hyperinsulinism
 * Congenital hypoplastic anemia
 * Congenital hypothyroidism
 * Congenital ichthyosiform erythroderma
 * Congenital insensitivity to pain with anhidrosis
 * Congenital lymphedema
 * Congenital melanocytic nevus
 * Congenital myopathy
 * Congenital nephrotic syndrome
 * Congenital pulmonary airway malformation
 * Congenital rubella syndrome
 * Congenital self-healing reticulohistiocytosis
 * Congenital syphilis
 * Conjunctivitis
 * Conn's syndrome
 * Connective tissue disease
 * Conradi–Hünermann syndrome
 * Constitutional growth delay
 * Contact dermatitis
 * Conversion disorder
 * Cooks syndrome
 * Cor pulmonale
 * Cor triatriatum
 * Corneal dystrophy
 * Cornelia de Lange Syndrome
 * Corneodermatoosseous syndrome
 * Coronary artery aneurysm
 * Coronary artery disease
 * Cortical dysplasia
 * Corticobasal degeneration
 * Costello syndrome
 * Costochondritis
 * Cowden syndrome
 * Cowpox
 * Crab louse
 * Cramp
 * Cramp fasciculation syndrome
 * Crandall syndrome
 * Craniodiaphyseal dysplasia
 * Craniofrontonasal dysplasia
 * Craniosynostosis
 * Creatine
 * CREST syndrome
 * Cretinism
 * Creutzfeldt–Jakob disease
 * Cri du chat
 * Crigler–Najjar syndrome
 * CRLF1
 * Crohn's disease
 * Crome syndrome
 * Cronkhite–Canada syndrome
 * Croup
 * Crouzon syndrome
 * Crouzonodermoskeletal syndrome
 * Cryoglobulinemia
 * Cryptococcosis
 * Cryptosporidiosis
 * Crystal arthropathy
 * Currarino syndrome
 * Cushing's syndrome
 * Cutaneous larva migrans
 * Cutaneous lymphoid hyperplasia
 * Cutaneous small-vessel vasculitis
 * Cutaneous T cell lymphoma
 * Cutis laxa
 * Cutis marmorata telangiectatica congenita
 * Cutis verticis gyrata
 * Cyclic neutropenia
 * Cyclic vomiting syndrome
 * Cyclosporiasis
 * Cyclothymia
 * Cystic fibrosis
 * Cystic hygroma
 * Cysticercosis
 * Cystinosis
 * Cystinuria
 * Cytochrome c oxidase
 * Cytomegalovirus
 * D-Glyceric acidemia
 * Daentl Towsend Siegel syndrome
 * Dahlberg Borer Newcomer syndrome
 * Dandy–Walker syndrome
 * Darier's disease
 * De Barsy syndrome
 * Death anxiety (psychology)
 * Deep vein thrombosis
 * Degos disease
 * Dejerine–Roussy syndrome
 * Dejerine–Sottas disease
 * Delayed ejaculation
 * Delayed sleep phase disorder
 * Delirium
 * Delirium tremens
 * Delusional disorder
 * Dementia
 * Dementia pugilistica
 * Dementia with Lewy bodies
 * Demyelinating disease
 * Dengue fever
 * Dent's disease
 * Dental abscess
 * Dental caries
 * Dental fluorosis
 * Dental phobia
 * Dentatorubral-pallidoluysian atrophy
 * Dentin dysplasia
 * Dentinogenesis imperfecta
 * Dependent personality disorder
 * Depersonalization disorder
 * Depressive personality disorder
 * Dermabrasion
 * Dermatitis
 * Dermatitis herpetiformis
 * Dermatographic urticaria
 * Dermatomyositis
 * Dermatopathia pigmentosa reticularis
 * Dermatophytid
 * Dermatophytosis
 * Dermoodontodysplasia
 * DeSanctis–Cacchione syndrome
 * Desmin-related myofibrillar myopathy
 * Desmoplastic small-round-cell tumor
 * Developmental coordination disorder
 * Dextrocardia
 * Diabetes insipidus
 * Diabetes mellitus
 * Diabetes mellitus and deafness
 * Diabetes mellitus type 1
 * Diabetes mellitus type 2
 * Diabetic angiopathy
 * Diabetic nephropathy
 * Diabetic neuropathy
 * Diabetic retinopathy
 * Diamond–Blackfan anemia
 * Diaper rash
 * Diarrhetic shellfish poisoning
 * Diastematomyelia
 * Diastrophic dysplasia
 * Dicarboxylic aminoaciduria
 * Diethylstilbestrol
 * Diffuse idiopathic skeletal hyperostosis
 * Diffuse large B-cell lymphoma
 * Diffuse neonatal hemangiomatosis
 * Diffuse panbronchiolitis
 * DiGeorge syndrome
 * Digoxin
 * Digoxin toxicity
 * Dihydropyrimidine dehydrogenase deficiency
 * Dilated cardiomyopathy
 * Diphallia
 * Diphtheria
 * Diphyllobothrium
 * Diplopia
 * Disaccharidase
 * Discoid lupus erythematosus
 * Disease
 * Disinhibited attachment disorder
 * Dislocation of hip
 * Dissociative disorder
 * Dissociative identity disorder
 * Distal 18q-
 * Distal muscular dystrophy
 * Distal renal tubular acidosis
 * Distal Trisomy 10q
 * Diverticulitis
 * Diverticulosis
 * Donnai–Barrow syndrome
 * Donohue syndrome
 * DOOR syndrome
 * Dopamine beta hydroxylase deficiency
 * Double outlet right ventricle
 * Down syndrome
 * Doxorubicin
 * Dracunculiasis
 * Drug-induced amnesia
 * Duane syndrome
 * Dubin–Johnson syndrome
 * Dubowitz syndrome
 * Duchenne muscular dystrophy
 * Duodenal atresia
 * Dupuytren's contracture
 * Dwarfism
 * Dysautonomia
 * Dysbarism
 * Dyscalculia
 * Dyschromatosis universalis hereditaria
 * Dysferlinopathy
 * Dysfibrinogenemia
 * Dysgerminoma
 * Dysgeusia
 * Dysgraphia
 * Dyskeratosis congenita
 * Dyskinesia
 * Dyslexia
 * Dysostosis
 * Dyspareunia
 * Dysplasia
 * Dysplastic nevus syndrome
 * Dysthymia
 * Dystonia
 * Early-onset Alzheimer's disease
 * Ebola virus disease
 * Echinococcosis
 * Echovirus
 * Ectodermal dysplasia
 * Ectopia cordis
 * Ectopia lentis
 * Ectopic pregnancy
 * Ectrodactyly
 * Ectrodactyly–ectodermal dysplasia–cleft syndrome
 * Edwards syndrome
 * EEM syndrome
 * Effects of cannabis
 * Egg allergy
 * Ehlers–Danlos syndrome
 * Ehrlichiosis
 * Ehrlichiosis ewingii infection
 * Eiken syndrome
 * Eisenmenger's syndrome
 * Ekbom syndrome
 * Elective mutism
 * Elejalde syndrome
 * Elephantiasis
 * Ellis–van Creveld syndrome
 * Emery–Dreifuss muscular dystrophy
 * Emetophobia
 * Empty sella syndrome
 * Encephalitis
 * Encephalitis lethargica
 * Encephalocele
 * Encephalomyelitis
 * Enchondromatosis
 * Encopresis
 * Endocardial fibroelastosis
 * Endocarditis
 * Endocrinology
 * Endodermal sinus tumor
 * Endometrial ablation
 * Endometrial stromal sarcoma
 * Endometriosis
 * Endosalpingiosis
 * Enolase deficiency
 * Enterobiasis
 * Entomophthoramycosis
 * Enuresis
 * Eosinophilia–myalgia syndrome
 * Eosinophilic cellulitis
 * Eosinophilic cystitis
 * Eosinophilic fasciitis
 * Eosinophilic folliculitis
 * Eosinophilic gastroenteritis
 * Eosinophilic granuloma
 * Eosinophilic pneumonia
 * Ependymoma
 * Epicondylitis
 * Epidermodysplasia verruciformis
 * Epidermolysis bullosa
 * Epidermolysis bullosa acquisita
 * Epidermolysis bullosa dystrophica
 * Epidermolytic hyperkeratosis
 * Epididymitis
 * Epilepsia partialis continua
 * Epilepsy
 * Epileptic spasms
 * Epithelial-myoepithelial carcinoma
 * Equinophobia
 * Erb's palsy
 * Erdheim–Chester disease
 * Ergophobia
 * Erosive pustular dermatitis of the scalp
 * Erysipelas
 * Erythema multiforme
 * Erythema nodosum
 * Erythroblastopenia
 * Erythroderma
 * Erythrokeratodermia variabilis
 * Erythrokeratodermia with ataxia
 * Erythromelalgia
 * Erythroplakia
 * Erythroplasia of Queyrat
 * Erythropoietic protoporphyria
 * Erythrotelangiectatic rosacea
 * Esophageal atresia
 * Esophageal cancer
 * Esophageal varices
 * Esophagus
 * Esophoria
 * Esotropia
 * Essential fatty acid
 * Essential fructosuria
 * Essential hypertension
 * Essential thrombocythaemia
 * Essential tremor
 * Esthesioneuroblastoma
 * Evans syndrome
 * Ewing's sarcoma
 * Exanthema subitum
 * Excoriated acne
 * Exencephaly
 * Exophoria
 * Exophthalmos
 * Exostosis
 * Exotropia
 * Experimental autoimmune encephalomyelitis
 * Exploding head syndrome
 * Extramammary Paget's disease
 * Eye movement
 * Fabry disease
 * FACES syndrome
 * Facial cleft
 * Facial nerve paralysis
 * Facioscapulohumeral muscular dystrophy
 * Factor IX
 * Factor V
 * Factor V Leiden
 * Factor VII
 * Factor X
 * Factor XI
 * Factor XII
 * Factor XIII
 * Factor XIII deficiency
 * Fahr's syndrome
 * Familial adenomatous polyposis
 * Familial aortic dissection
 * Familial British dementia
 * Familial dysautonomia
 * Familial dysbetalipoproteinemia
 * Familial hemiplegic migraine
 * Familial hypertriglyceridemia
 * Familial isolated vitamin E deficiency
 * Familial male-limited precocious puberty
 * Familial Mediterranean fever
 * Familial partial lipodystrophy
 * Fan death
 * Fanconi anemia
 * Fanconi syndrome
 * Farber disease
 * Farmer's lung
 * Fasciolosis
 * Fatal familial insomnia
 * Fatty liver
 * Fazio–Londe disease
 * Fear of bees
 * Fear of daylight
 * Fear of fish
 * Fear of frogs
 * Fear of mice
 * Fear of needles
 * Febrile neutrophilic dermatosis
 * Febrile seizure
 * Fechtner syndrome
 * Feingold syndrome
 * Felty's syndrome
 * Female sexual arousal disorder
 * Femur fibula ulna syndrome
 * Ferroportin
 * Fetal alcohol syndrome
 * Fetal hydantoin syndrome
 * Fetal trimethadione syndrome
 * Fetal warfarin syndrome
 * FG syndrome
 * Fibrochondrogenesis
 * Fibrodysplasia ossificans progressiva
 * Fibroma
 * Fibromatosis
 * Fibromuscular dysplasia
 * Fibromyalgia
 * Fibrosarcoma
 * Fibrosis
 * Fibrous dysplasia of bone
 * Fifth disease
 * Filariasis
 * Fish-eye disease
 * Fissured tongue
 * Fitz-Hugh–Curtis syndrome
 * Fitzsimmons–Guilbert syndrome
 * Flat feet
 * Floater
 * Floating-Harbor syndrome
 * Fluorosis
 * Flynn–Aird syndrome
 * Focal dermal hypoplasia
 * Focal dystonia
 * Focal facial dermal dysplasia
 * Foix–Alajouanine syndrome
 * Foix–Chavany–Marie syndrome
 * Folie à deux
 * Follicular lymphoma
 * Follicular thyroid cancer
 * Foodborne illness
 * Foreign accent syndrome
 * Formaldehyde
 * Fountain syndrome
 * Fournier gangrene
 * Fox–Fordyce disease
 * Fragile X syndrome
 * Franceschetti–Klein syndrome
 * Fraser syndrome
 * Frasier syndrome
 * Freeman–Sheldon syndrome
 * Freiberg disease
 * Frey's syndrome
 * Friedreich's ataxia
 * Frontonasal dysplasia
 * Frontotemporal dementia
 * Fructose 1,6-bisphosphatase
 * Fucosidosis
 * Fugue state
 * Fukuyama congenital muscular dystrophy
 * Fumarase deficiency
 * Galactocele
 * Galactokinase deficiency
 * Galactorrhea
 * Galactorrhea hyperprolactinemia
 * Galactose epimerase deficiency
 * Galactose-1-phosphate uridylyltransferase deficiency
 * Galactosemia
 * Galactosialidosis
 * Galloway Mowat syndrome
 * Gallstone
 * Ganglioglioma
 * Gangliosidosis
 * Ganser syndrome
 * GAPO syndrome
 * Gardner's syndrome
 * Gastric antral vascular ectasia
 * Gastric dumping syndrome
 * Gastric lymphoma
 * Gastrocutaneous syndrome
 * Gastroenteritis
 * Gastroesophageal reflux disease
 * Gastrointestinal cancer
 * Gastrointestinal stromal tumor
 * Gastroschisis
 * Gaucher's disease
 * Gender identity disorder
 * Generalised epilepsy
 * Generalized anxiety disorder
 * Genital wart
 * Genu varum
 * Genuphobia
 * Geographic tongue
 * Gerodermia osteodysplastica
 * Gerstmann syndrome
 * Gestational diabetes
 * Gestational pemphigoid
 * Gestational trophoblastic disease
 * Gianotti–Crosti syndrome
 * Giant axonal neuropathy
 * Giant platelet disorder
 * Giant-cell arteritis
 * Giardiasis
 * Gigantism
 * Gilbert's syndrome
 * Gingivitis
 * Gitelman syndrome
 * GJB2
 * Glandular rosacea
 * Glanzmann's thrombasthenia
 * Glaucoma
 * Glioblastoma multiforme
 * Glioma
 * Gliomatosis cerebri
 * Gliosarcoma
 * Glomerulonephritis
 * Glomerulosclerosis
 * Glossophobia
 * Glucagonoma
 * Glucocorticoid deficiency 1
 * Glucose-6-phosphate dehydrogenase deficiency
 * Glucose-galactose malabsorption
 * Glutamate flavoring
 * Glutaric aciduria type 1
 * Glutathione synthetase deficiency
 * Gluten-sensitive enteropathy-associated conditions
 * Glycine encephalopathy
 * Glycogen storage disease
 * Glycogen storage disease type 0
 * Glycogen storage disease type I
 * Glycogen storage disease type II
 * Glycogen storage disease type III
 * Glycogen storage disease type IV
 * Glycogen storage disease type V
 * Glycogen storage disease type VI
 * Glycogen storage disease type XI
 * Glycosuria
 * GM1 gangliosidoses
 * GM2 gangliosidoses
 * GMS syndrome
 * Gnathophyma
 * Goitre
 * Goldenhar syndrome
 * Gonadal dysgenesis
 * Goodpasture syndrome
 * Gorham's disease
 * Gougerot–Blum syndrome
 * Gout
 * Graft-versus-host disease
 * Gram-negative rosacea
 * Granulocyte
 * Granuloma annulare
 * Granulomatosis with polyangiitis
 * Granulomatous facial dermatitis
 * Graves' disease
 * Gray platelet syndrome
 * Group B streptococcal infection
 * Growth hormone deficiency
 * Guanidinoacetate methyltransferase deficiency
 * Guillain–Barré syndrome
 * Gunther disease
 * Gymnophobia
 * Gynecomastia
 * Haemochromatosis type 3
 * Haemophilia
 * Haemophilia A
 * Haemophilia B
 * Haemophilia C
 * Hagemoser–Weinstein–Bresnick syndrome
 * Hailey–Hailey disease
 * Hair disease
 * Hair loss
 * Hairy cell leukemia
 * Hairy palms and soles
 * Hajdu–Cheney syndrome
 * Halal syndrome
 * Hallermann–Streiff syndrome
 * Hallucinogen persisting perception disorder
 * Halogen acne
 * Hamartoma
 * Hand, foot and mouth disease
 * Hand–Schüller–Christian disease
 * Hantavirus hemorrhagic fever with renal syndrome
 * Harding ataxia
 * Harlequin-type ichthyosis
 * Harpaxophobia
 * Hartnup disease
 * Hashimoto's thyroiditis
 * Hawkinsinuria
 * Hay–Wells syndrome
 * Hearing loss
 * Heart block
 * Heart failure
 * Heavy metal (chemistry)
 * HEC syndrome
 * Heliophobia
 * HELLP syndrome
 * Helminthiasis
 * Hemangioblastoma
 * Hemangioendothelioma
 * Hemangioma
 * Hemangiopericytoma
 * Hemifacial microsomia
 * Hemiplegia
 * Hemoglobin C
 * Hemoglobin E
 * Hemoglobinopathy
 * Hemoglobinuria
 * Hemolytic-uremic syndrome
 * Hemophagocytic lymphohistiocytosis
 * Hemorrhoid
 * Hemosiderosis
 * Hemothorax
 * Hennekam syndrome
 * Henoch–Schönlein purpura
 * Hepadnaviridae
 * Heparin-induced thrombocytopenia
 * Hepatic encephalopathy
 * Hepatic veno-occlusive disease
 * Hepatitis
 * Hepatitis A
 * Hepatitis B
 * Hepatitis B virus
 * Hepatitis C
 * Hepatitis D
 * Hepatitis E
 * Hepatoblastoma
 * Hepatocellular carcinoma
 * Hepatorenal syndrome
 * Hereditary angioedema
 * Hereditary breast–ovarian cancer syndrome
 * Hereditary coproporphyria
 * Hereditary elliptocytosis
 * Hereditary fructose intolerance
 * Hereditary hemorrhagic telangiectasia
 * Hereditary inclusion body myopathy
 * Hereditary mucoepithelial dysplasia
 * Hereditary multiple exostoses
 * Hereditary nonpolyposis colorectal cancer
 * Hereditary pancreatitis
 * Hereditary pyropoikilocytosis
 * Hereditary spastic paraplegia
 * Hereditary spherocytosis
 * Hereditary stomatocytosis
 * Hermansky–Pudlak syndrome
 * Hermaphrodite
 * Hernia
 * Herpangina
 * Herpes B virus
 * Herpes of the eye
 * Herpes simplex
 * Herpes simplex virus
 * Herpes zoster
 * Herpesviral encephalitis
 * Herpesviridae
 * Herpetophobia
 * Heterophoria
 * HFE hereditary haemochromatosis
 * Hiccup
 * Hidradenitis suppurativa
 * High-altitude pulmonary edema
 * Hip dysplasia (canine)
 * Hip dysplasia (human)
 * Hirschsprung's disease
 * Histidinemia
 * Histoplasmosis
 * Histrionic personality disorder
 * HIV
 * HIV-associated neurocognitive disorder
 * HIV/AIDS
 * Hodgkin's lymphoma
 * Holocarboxylase synthetase deficiency
 * Holoprosencephaly
 * Holt–Oram syndrome
 * Homocystinuria
 * Homophobia
 * Hookworm
 * Horner's syndrome
 * Horseshoe kidney
 * Hot tub folliculitis
 * Howel–Evans syndrome
 * HOXA13
 * Ho–Kaufman–Mcalister syndrome
 * Human granulocytic anaplasmosis
 * Human monocytotropic ehrlichiosis
 * Hunter syndrome
 * Huntington's disease
 * Hurler syndrome
 * Hutchinson's teeth
 * Hydranencephaly
 * Hydrocephalus
 * Hydrolethalus syndrome
 * Hydronephrosis
 * Hydrops fetalis
 * Hydrops-ectopic calcification-moth-eaten skeletal dysplasia
 * Hymenolepiasis
 * Hyper IgM syndrome
 * Hyper-IgD syndrome
 * Hyperaldosteronism
 * Hyperammonemia
 * Hyperandrogenism
 * Hypercalcaemia
 * Hypercalciuria
 * Hypercementosis
 * Hypercholesterolemia
 * Hyperekplexia
 * Hypereosinophilic syndrome
 * Hypergeusia
 * Hyperglycemia
 * Hyperglycerolemia
 * Hyperglycinemia
 * Hyperhidrosis
 * Hyperhomocysteinemia
 * Hyperimmunoglobulin E syndrome
 * Hyperkalemia
 * Hyperkalemic periodic paralysis
 * Hyperkeratosis
 * Hyperlipidemia
 * Hyperlysinemia
 * Hypermethioninemia
 * Hypermobility
 * Hyperopia
 * Hyperostosis frontalis interna
 * Hyperoxaluria
 * Hyperparathyroidism
 * Hyperphenylalaninemia
 * Hyperprolactinaemia
 * Hyperprolinemia
 * Hyperreflexia
 * Hypersensitivity
 * Hypersensitivity pneumonitis
 * Hypersomnia
 * Hypertension
 * Hypertensive nephropathy
 * Hypertensive retinopathy
 * Hyperthermia
 * Hyperthyroidism
 * Hypertrichosis
 * Hypertriglyceridemia
 * Hypertrophic cardiomyopathy
 * Hypertropia
 * Hypertryptophanemia
 * Hyperuricemia
 * Hypervalinemia
 * Hypervitaminosis A
 * Hypervitaminosis D
 * Hypervitaminosis E
 * Hypoactive sexual desire disorder
 * Hypoaldosteronism
 * Hypobetalipoproteinemia
 * Hypocalcaemia
 * Hypochondriasis
 * Hypochondrogenesis
 * Hypochondroplasia
 * Hypodermyasis
 * Hypodontia
 * Hypogammaglobulinemia
 * Hypoglycemia
 * Hypogonadism
 * Hypohidrotic ectodermal dysplasia
 * Hypokalemia
 * Hypokalemic periodic paralysis
 * Hypokalemic sensory overstimulation
 * Hypokinesia
 * Hypolipoproteinemia
 * Hypoparathyroidism
 * Hypophosphatasia
 * Hypopituitarism
 * Hypoplastic left heart syndrome
 * Hypoprothrombinemia
 * Hypospadias
 * Hypothermia
 * Hypothyroidism
 * Hypotonia
 * Hypotrichosis
 * Hypoxia (medical)
 * I-cell disease
 * Ichthyoallyeinotoxism
 * Ichthyosis
 * Ichthyosis acquisita
 * Ichthyosis bullosa of Siemens
 * Ichthyosis follicularis with alopecia and photophobia syndrome
 * Ichthyosis linearis circumflexa
 * Ichthyosis vulgaris
 * Idiopathic facial aseptic granuloma
 * Idiopathic giant-cell myocarditis
 * Idiopathic intracranial hypertension
 * Idiopathic pulmonary fibrosis
 * Idiopathic pulmonary haemosiderosis
 * Idiopathic sclerosing mesenteritis
 * Idiopathic thrombocytopenic purpura
 * IgA nephropathy
 * Iminoglycinuria
 * Immunodeficiency–centromeric instability–facial anomalies syndrome
 * Imperforate anus
 * Impetigo
 * Impossible syndrome
 * Inborn error of metabolism
 * Inborn errors of renal tubular transport
 * Incidentaloma
 * Inclusion body myositis
 * Incontinentia pigmenti
 * Incontinentia pigmenti achromians
 * Indometacin
 * Infant respiratory distress syndrome
 * Infantile acne
 * Infantile cortical hyperostosis
 * Infantile digital fibromatosis
 * Infantile free sialic acid storage disease
 * Infantile myofibromatosis
 * Infantile neuroaxonal dystrophy
 * Infantile neuronal ceroid lipofuscinosis
 * Infantile Refsum disease
 * Infectious mononucleosis
 * Infective endocarditis
 * Inflammatory breast cancer
 * Influenza
 * Ingrown nail
 * Inguinal hernia
 * Insulinoma
 * Intellectual disability
 * Intermediate uveitis
 * Interrupted aortic arch
 * Intersex
 * Interstitial cystitis
 * Interstitial lung disease
 * Intestinal atresia
 * Intestinal pseudoobstruction
 * Intestinal spirochetosis
 * Intoxicative inhalant
 * Intracranial aneurysm
 * Intraocular lymphoma
 * Iodine
 * Iodine deficiency
 * Iridocorneal endothelial syndrome
 * Iridogoniodysgenesis, dominant type
 * Iron deficiency
 * Iron overload
 * Irritable bowel syndrome
 * Irritant contact dermatitis
 * Irritant diaper dermatitis
 * Isosporiasis
 * Isotretinoin
 * Isovaleric acidemia
 * Jackson–Weiss syndrome
 * Jacobsen syndrome
 * Jalili syndrome
 * Jansky–Bielschowsky disease
 * Japanese encephalitis
 * Jervell and Lange-Nielsen syndrome
 * Johanson–Blizzard syndrome
 * John Langdon Down
 * Johnson–Munson syndrome
 * Joubert syndrome
 * Jumping Frenchmen of Maine
 * Junctional ectopic tachycardia
 * Junctional epidermolysis bullosa (medicine)
 * Juvenile dermatomyositis
 * Juvenile hemochromatosis
 * Juvenile hyaline fibromatosis
 * Juvenile idiopathic arthritis
 * Juvenile myoclonic epilepsy
 * Juvenile osteoporosis
 * Kabuki syndrome
 * Kallmann syndrome
 * Kaposi's sarcoma
 * Kapur–Toriello syndrome
 * Kasabach–Merritt syndrome
 * Katz syndrome
 * Kaufman oculocerebrofacial syndrome
 * Kawasaki disease
 * Kearns–Sayre syndrome
 * Keloid
 * Keratitis–ichthyosis–deafness syndrome
 * Keratoacanthoma
 * Keratoconjunctivitis sicca
 * Keratoconus
 * Keratolytic winter erythema
 * Keratomalacia
 * Keratosis follicularis spinulosa decalvans
 * Keratosis pilaris
 * Keratosis pilaris atrophicans faciei
 * Kerion
 * Kernicterus
 * Keutel syndrome
 * Khat
 * Kidney stone
 * Kikuchi disease
 * Kimura's disease
 * Kindler syndrome
 * Kjer's optic neuropathy
 * Kleine–Levin syndrome
 * Klinefelter syndrome
 * Klippel–Feil syndrome
 * Klippel–Trénaunay syndrome
 * Klumpke paralysis
 * Klüver–Bucy syndrome
 * Kniest dysplasia
 * Kocher–Debre–Semelaigne syndrome
 * Kohlschütter-Tönz syndrome
 * Koilonychia
 * Koro (medicine)
 * Korsakoff's syndrome
 * Kostmann syndrome
 * Kowarski syndrome
 * Krabbe disease
 * Kuru (disease)
 * Kwashiorkor
 * Kyasanur forest disease
 * Kyphosis
 * Köhler disease
 * Labyrinthine fistula
 * Labyrinthitis
 * Lachiewicz–Sibley syndrome
 * Lacunar amnesia
 * Lafora disease
 * Lambert–Eaton myasthenic syndrome
 * Lamellar ichthyosis
 * Landau–Kleffner syndrome
 * Langerhans cell histiocytosis
 * Langer–Giedion syndrome
 * Large for gestational age
 * Laron syndrome
 * Larsen syndrome
 * Laryngeal cancer
 * Laryngeal cleft
 * Laryngeal papillomatosis
 * Laryngocele
 * Laryngomalacia
 * Lassa fever
 * Late termination of pregnancy
 * Lattice corneal dystrophy
 * Lead poisoning
 * Leaky gut syndrome
 * Leber's congenital amaurosis
 * Leber's hereditary optic neuropathy
 * Lecithin cholesterol acyltransferase deficiency
 * Left ventricular hypertrophy
 * Legg–Calvé–Perthes syndrome
 * Legionnaires' disease
 * Leigh's disease
 * Leiner's disease
 * Leiomyoma
 * Leiomyosarcoma
 * Leishmaniasis
 * Lemierre's syndrome
 * Lennox–Gastaut syndrome
 * Lenz microphthalmia syndrome
 * Leprosy
 * Leptospirosis
 * Leri pleonosteosis
 * Lesch–Nyhan syndrome
 * Lethal congenital contracture syndrome
 * Letterer–Siwe disease
 * Leukemia
 * Leukocyte adhesion deficiency
 * Leukodystrophy
 * Leukoplakia
 * Levator ani
 * Levo-Transposition of the great arteries
 * Lhermitte–Duclos disease
 * Lichen myxedematosus
 * Lichen planus
 * Lichen sclerosus
 * Lichen spinulosus
 * Liddle's syndrome
 * Light chain deposition disease
 * Limb-girdle muscular dystrophy
 * Lipid pneumonia
 * Lipodystrophy
 * Lipoid congenital adrenal hyperplasia
 * Lipoprotein lipase deficiency
 * Liposarcoma
 * Lissencephaly
 * List of cutaneous conditions
 * List of diseases (A)
 * List of diseases (G)
 * List of phobias
 * Listeriosis
 * Livedoid dermatitis
 * Liver spot
 * Li–Fraumeni syndrome
 * Loa loa filariasis
 * Locked-in syndrome
 * Loeys–Dietz syndrome
 * Loin pain hematuria syndrome
 * Long QT syndrome
 * Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency
 * Loose anagen syndrome
 * Lowry–MacLean syndrome
 * Lucey–Driscoll syndrome
 * Lujan–Fryns syndrome
 * Lumbar spinal stenosis
 * Lung cancer
 * Lupoid rosacea
 * Lupus anticoagulant
 * Lupus erythematosus
 * Lupus miliaris disseminatus faciei
 * Lyme disease
 * Lymphangiectasia
 * Lymphangioleiomyomatosis
 * Lymphangioma
 * Lymphatic filariasis
 * Lymphedema
 * Lymphedema–distichiasis syndrome
 * Lymphoblastic lymphoma
 * Lymphocytic colitis
 * Lymphocytopenia
 * Lymphoma
 * Lymphomatoid granulomatosis
 * Lymphomatoid papulosis
 * Lyngstadaas syndrome
 * Lysinuric protein intolerance
 * Lysosomal storage disease
 * Léri–Weill dyschondrosteosis
 * Macroglobulinemia
 * Macroglossia
 * Macrophagic myofasciitis
 * Macular corneal dystrophy
 * Macular degeneration
 * Macular hypoplasia
 * Maffucci syndrome
 * Majewski's polydactyly syndrome
 * Major depressive disorder
 * Mal de debarquement
 * Malakoplakia
 * Malaria
 * Malignant hyperthermia
 * Malignant peripheral nerve sheath tumor
 * Malignant rhabdoid tumour
 * Mallory–Weiss syndrome
 * Malonyl-CoA decarboxylase deficiency
 * Malouf syndrome
 * Malpuech facial clefting syndrome
 * Mandibuloacral dysplasia
 * Mange
 * Mannosidosis
 * Mansonelliasis
 * Mantle cell lymphoma
 * Maple syrup urine disease
 * Marburg virus disease
 * Marchiafava–Bignami disease
 * Marcus Gunn phenomenon
 * Marden–Walker syndrome
 * Marek's disease
 * Marfan syndrome
 * Marfanoid
 * Marinesco–Sjögren syndrome
 * Maroteaux–Lamy syndrome
 * Marshall–Smith syndrome
 * MASA syndrome
 * Mass psychogenic illness
 * Mastocytosis
 * Mastoiditis
 * Maturity onset diabetes of the young
 * May–Hegglin anomaly
 * McCune–Albright syndrome
 * McGillivray syndrome
 * McKusick–Kaufman syndrome
 * Meadow's syndrome
 * Measles
 * Meckel syndrome
 * Mediastinitis
 * Medication phobia
 * Medicine
 * Medium-chain acyl-coenzyme A dehydrogenase deficiency
 * Medullary cystic kidney disease
 * Medullary sponge kidney
 * Medullary thyroid cancer
 * Medulloblastoma
 * Megaduodenum
 * Megalencephaly
 * Megaloblastic anemia
 * Megaureter
 * Meige's syndrome
 * MELAS syndrome
 * Meleda disease
 * Melioidosis
 * Melkersson–Rosenthal syndrome
 * Melnick–Needles syndrome
 * Meningioma
 * Meningitis
 * Meningococcal disease
 * Menkes disease
 * Mercury poisoning
 * MERRF syndrome
 * Mesenteric ischemia
 * Mesoblastic nephroma
 * Mesothelioma
 * Metabolic acidosis
 * Metabolic syndrome
 * Metachondromatosis
 * Metachromatic leukodystrophy
 * Metageria
 * Methemoglobinemia
 * Methylmalonic acidemia
 * Methylmalonyl-CoA mutase deficiency
 * Methylmercury
 * Metophyma
 * Mevalonate kinase deficiency
 * Michelin tire baby syndrome
 * Michels Caskey syndrome
 * Michels syndrome
 * Mickleson syndrome
 * Micro syndrome
 * Microcephaly
 * Microcephaly lymphoedema chorioretinal dysplasia
 * Microcoria
 * Micrognathism
 * Microphthalmia
 * Microphthalmia–dermal aplasia–sclerocornea syndrome
 * Microscopic polyangiitis
 * Microsporidiosis
 * Microtia
 * Microvillous inclusion disease
 * Migraine
 * Mild cognitive impairment
 * Miller syndrome
 * Miller–Dieker syndrome
 * Milroy's disease
 * Minamata disease
 * Minimally differentiated acute myeloblastic leukemia
 * Mirhosseini–Holmes–Walton syndrome
 * Miscarriage
 * Mismatch repair cancer syndrome
 * Mitochondrial disease
 * Mitochondrial trifunctional protein deficiency
 * Mitral valve prolapse
 * Mitral valve stenosis
 * Mixed connective tissue disease
 * Mixed gonadal dysgenesis
 * Mixed Müllerian tumor
 * Mixed receptive-expressive language disorder
 * MN1 (gene)
 * Mohr–Tranebjærg syndrome
 * Molar pregnancy
 * Molluscum contagiosum
 * Molybdenum cofactor deficiency
 * MOMO syndrome
 * Mondini dysplasia
 * Mondor's disease
 * Monilethrix
 * Monochromacy
 * Monoclonal gammopathy of undetermined significance
 * Morel's ear
 * Morgellons
 * Morphea
 * Morquio syndrome
 * Motor neuron disease
 * Movement disorder
 * Moyamoya disease
 * Muckle–Wells syndrome
 * Mucolipidosis type IV
 * Mucopolysaccharidosis
 * Mucormycosis
 * Muenke syndrome
 * Mulibrey nanism
 * Multicentric reticulohistiocytosis
 * Multifocal motor neuropathy
 * Multiple chemical sensitivity
 * Multiple endocrine neoplasia type 1
 * Multiple endocrine neoplasia type 2
 * Multiple epiphyseal dysplasia
 * Multiple myeloma
 * Multiple organ dysfunction syndrome
 * Multiple pterygium syndrome
 * Multiple sclerosis
 * Multiple sulfatase deficiency
 * Multiple system atrophy
 * Mumps
 * Muscle atrophy
 * Muscular dystrophy
 * Myasthenia gravis
 * Mycetoma
 * Mycobacterium avium-intracellulare infection
 * Mycosis fungoides
 * Myelin
 * Myelitis
 * Myelodysplastic syndrome
 * Myelofibrosis
 * Myeloid leukemia
 * Myeloid sarcoma
 * Myeloperoxidase deficiency
 * Myhre syndrome
 * Myiasis
 * Myocardial infarction
 * Myocarditis
 * Myoclonic dystonia
 * Myoclonic epilepsy
 * Myoclonus
 * Myoglobinuria
 * Myopathy
 * Myopathy, X-linked, with excessive autophagy
 * Myopia
 * Myositis
 * Myositis ossificans
 * Myotonia congenita
 * Myotonic dystrophy
 * Mysophobia
 * Myxedema
 * Myxoid liposarcoma
 * Myxozoa
 * Ménière's disease
 * Ménétrier's disease
 * Möbius syndrome
 * Müllerian agenesis
 * Münchausen syndrome
 * Münchausen syndrome by proxy
 * N-Acetylglutamate synthase deficiency
 * Naegeli–Franceschetti–Jadassohn syndrome
 * Nager acrofacial dysostosis
 * Nail–patella syndrome
 * Nakajo syndrome
 * Nance–Horan syndrome
 * Narcissistic personality disorder
 * Narcolepsy
 * Nasodigitoacoustic syndrome
 * Nasopharynx cancer
 * Naxos syndrome
 * Necrophilia
 * Necrotizing fasciitis
 * Neisseria gonorrhoeae
 * Neisseria meningitidis
 * Nelson's syndrome
 * Nemaline myopathy
 * Neonatal acne
 * Neonatal diabetes mellitus
 * Neonatal hemochromatosis
 * Neonatal hepatitis
 * Neonatal herpes simplex
 * Neonatal jaundice
 * Neonatal onset multisystem inflammatory disease
 * Nephrocalcinosis
 * Nephrogenic diabetes insipidus
 * Nephronophthisis
 * Nephropathy
 * Nephrotic syndrome
 * Nerve sheath tumor
 * Nesidioblastosis
 * Netherton syndrome
 * Neural tube defect
 * Neurasthenia
 * Neuroacanthocytosis
 * Neuroblastoma
 * Neurocutaneous melanosis
 * Neuroendocrine tumor
 * Neurofibrillary tangle
 * Neurofibroma
 * Neurofibromatosis
 * Neurofibromatosis type 3
 * Neurofibromatosis type 4
 * Neurofibromatosis type I
 * Neurofibromatosis type II
 * Neurogenic diabetes insipidus
 * Neuroleptic malignant syndrome
 * Neuromyelitis optica
 * Neuromyotonia
 * Neuronal ceroid lipofuscinosis
 * Neurosyphilis
 * Neurotoxic shellfish poisoning
 * Neurotoxicity
 * Neurulation
 * Neutral lipid storage disease
 * Neutropenia
 * Nevoid basal cell carcinoma syndrome
 * Nevus sebaceous
 * Nezelof syndrome
 * Nicolaides–Baraitser syndrome
 * Nicotine withdrawal
 * Niemann–Pick disease
 * Niemann–Pick disease, type C
 * Nijmegen breakage syndrome
 * Nissen fundoplication
 * Nocardiosis
 * Noise-induced hearing loss
 * Noma (disease)
 * Non-24-hour sleep–wake disorder
 * Non-Hodgkin lymphoma
 * Non-Langerhans cell histiocytosis
 * Non-small-cell lung carcinoma
 * Nonvenereal endemic syphilis
 * Nonverbal learning disorder
 * Noonan syndrome
 * Norman–Roberts syndrome
 * Norrie disease
 * Northern epilepsy syndrome
 * Nose-picking
 * Notalgia paresthetica
 * Nyctalopia
 * Nyctophobia
 * Nystagmus
 * Obesophobia
 * Obsessive–compulsive disorder
 * Obsessive–compulsive personality disorder
 * Obstructive sleep apnea
 * Occipital horn syndrome
 * Occupational acne
 * Occupational asthma
 * Occupational lung disease
 * Ochronosis
 * Ocular albinism
 * Ocular rosacea
 * Oculocerebrocutaneous syndrome
 * Oculocerebrorenal syndrome
 * Oculocutaneous albinism type I
 * Oculodentodigital dysplasia
 * Oculomotor nerve palsy
 * Oculopharyngeal muscular dystrophy
 * Odontoma
 * Ogilvie syndrome
 * Oikophobia
 * Oil acne
 * Olfactory reference syndrome
 * Oligodactyly
 * Oliver–McFarlane syndrome
 * Olivopontocerebellar atrophy
 * Ollier disease
 * Olney's lesions
 * Ombrophobia
 * Omenn syndrome
 * Omsk hemorrhagic fever
 * Onchocerciasis
 * Oncocytoma
 * Ondine's curse
 * Oneirophobia
 * Onychogryphosis
 * Onycholysis
 * Onychomadesis
 * Onychomatricoma
 * Onychomycosis
 * Onychophosis
 * Opioid dependence
 * Opioid-induced hyperalgesia
 * Opportunistic infection
 * Oppositional defiant disorder
 * Opsismodysplasia
 * Optic disc drusen
 * Optic nerve hypoplasia
 * Optic neuritis
 * Optic neuropathy
 * Oral cancer
 * Oral submucous fibrosis
 * Organic acidemia
 * Organic brain syndrome
 * Organophosphate poisoning
 * Ornithine aminotransferase deficiency
 * Ornithine translocase deficiency
 * Orofaciodigital syndrome 1
 * Orotic aciduria
 * Orthomolecular medicine
 * Orthostatic hypotension
 * Orthostatic intolerance
 * Osgood–Schlatter disease
 * OSLAM syndrome
 * Osmophobia
 * Osteoarthritis
 * Osteochondritis
 * Osteochondritis dissecans
 * Osteochondrodysplasia
 * Osteochondroma
 * Osteogenesis imperfecta
 * Osteomalacia
 * Osteomyelitis
 * Osteopetrosis
 * Osteopoikilosis
 * Osteoporosis
 * Osteosarcoma
 * Osteosclerosis
 * Otitis externa
 * Otodental syndrome
 * Otolaryngology
 * Otophyma
 * Otosclerosis
 * Otospondylomegaepiphyseal dysplasia
 * Ovarian cancer
 * Overwhelming post-splenectomy infection
 * Oxycephaly
 * Pachygyria
 * Pachyonychia congenita
 * Pacman dysplasia
 * Paget's disease of bone
 * Paget's disease of the breast
 * Painful bruising syndrome
 * Palindromic rheumatism
 * Pallister–Hall syndrome
 * Pallister–Killian syndrome
 * Palmoplantar keratoderma
 * Pancreas
 * Pancreas divisum
 * Pancreatic cancer
 * Pancreatoblastoma
 * PANDAS
 * Panic attack
 * Panic disorder
 * Panniculitis
 * Panphobia
 * Pantothenate kinase-associated neurodegeneration
 * Papillary thyroid cancer
 * Papilledema
 * Papillitis
 * Papillon–Lefèvre syndrome
 * Papular mucinosis
 * Paracetamol
 * Paracetamol toxicity
 * Paracoccidioidomycosis
 * Paraganglioma
 * Paralytic shellfish poisoning
 * Paramyotonia congenita
 * Paranasal sinuses
 * Paraneoplastic cerebellar degeneration
 * Paranoid personality disorder
 * Paraphilia
 * Paraplegia
 * Parapsoriasis
 * Parastremmatic dwarfism
 * Parathyroid carcinoma
 * Parathyroid neoplasm
 * Paratyphoid fever
 * Paresis
 * Parkes Weber syndrome
 * Parkinson's disease
 * Parkinsonism
 * Paronychia
 * Paroxysmal cold hemoglobinuria
 * Paroxysmal nocturnal hemoglobinuria
 * Paroxysmal nonkinesigenic dyskinesia
 * Parry–Romberg syndrome
 * Parsonage–Turner syndrome
 * Paruresis
 * Parvovirus
 * Parvovirus B19
 * Pashayan syndrome
 * Passive-aggressive behavior
 * Patau syndrome
 * Patent ductus arteriosus
 * Pathogenic Escherichia coli
 * Patient Protection and Affordable Care Act
 * Patterson syndrome
 * Peanut allergy
 * Pediculosis
 * Pediculosis corporis
 * Peeling skin syndrome
 * PEHO syndrome
 * Pelizaeus–Merzbacher disease
 * Pellagra
 * Pelvic inflammatory disease
 * Pelvic lipomatosis
 * Pemphigus
 * Pemphigus foliaceus
 * Pemphigus vulgaris
 * Pendred syndrome
 * Penile agenesis and testicular agenesis
 * Pentalogy of Cantrell
 * Pentosuria
 * Peptic ulcer
 * Perifolliculitis capitis abscedens et suffodiens
 * Perinatal asphyxia
 * Periodic fever, aphthous stomatitis, pharyngitis and adenitis
 * Periodic limb movement disorder
 * Periodic paralysis
 * Periodontal abscess
 * Periodontal pathology
 * Periodontitis
 * Perioral dermatitis
 * Periorbital dermatitis
 * Periorificial dermatitis
 * Peripartum cardiomyopathy
 * Peripheral neuropathy
 * Peripheral T-cell lymphoma
 * Peritonitis
 * Peritonsillar abscess
 * Periventricular leukomalacia
 * Permanent neonatal diabetes mellitus
 * Pernicious anemia
 * Peroxisomal disorder
 * Persistent edema of rosacea
 * Persistent genital arousal disorder
 * Persistent truncus arteriosus
 * Pertussis
 * Peters-plus syndrome
 * Peutz–Jeghers syndrome
 * Peyronie's disease
 * Pfeiffer syndrome
 * PHACES Syndrome
 * Phakomatosis pigmentokeratotica
 * Phakomatosis pigmentovascularis
 * Phenylketonuria
 * Phenytoin
 * Pheochromocytoma
 * Phocomelia
 * Phonophobia
 * Phosphofructokinase deficiency
 * Phosphoglucomutase
 * Phosphoglycerate kinase
 * Photosensitive epilepsy
 * Phymatous rosacea
 * Physical abuse
 * Physical urticaria
 * Phytophotodermatitis
 * Pica (disorder)
 * Pick's disease
 * Pickardt syndrome
 * Piebaldism
 * Pierre Marie
 * Pierre Robin syndrome
 * Pigeon toe
 * Pigment dispersion syndrome
 * Pigmented villonodular synovitis
 * Pili annulati
 * Pili multigemini
 * Pili torti
 * Pilocytic astrocytoma
 * Pilonidal cyst
 * Pilotto syndrome
 * Pinealoma
 * Pinta (disease)
 * Pipecolic acidemia
 * Pira
 * Pitt–Hopkins syndrome
 * Pityriasis lichenoides chronica
 * Pityriasis lichenoides et varioliformis acuta
 * Pityriasis rubra pilaris
 * Placental abruption
 * Placental disease
 * Plague (disease)
 * Plantar fibromatosis
 * Platelet
 * Pleomorphic undifferentiated sarcoma
 * Pleural effusion
 * Pleurisy
 * Pleuropulmonary blastoma
 * Plum syndrome
 * Plummer–Vinson syndrome
 * Pneumoconiosis
 * Pneumocystis pneumonia
 * Pneumocystosis
 * Pneumonic plague
 * Pneumonoultramicroscopicsilicovolcanoconiosis
 * Pneumothorax
 * POEMS syndrome
 * Pogosta disease
 * Poland syndrome
 * Poliomyelitis
 * Polyarteritis nodosa
 * Polyarthritis
 * Polycystic kidney disease
 * Polycystic ovary syndrome
 * Polycythemia vera
 * Polydactyly
 * Polymorphous low-grade adenocarcinoma
 * Polymyalgia rheumatica
 * Polymyositis
 * Polyneuropathy
 * Polyomaviridae
 * Polyploid
 * Polyradiculoneuropathy
 * Popliteal pterygium syndrome
 * Porencephaly
 * Porokeratosis
 * Porphyria
 * Porphyria cutanea tarda
 * Portal hypertension
 * Portal vein thrombosis
 * Post-polio syndrome
 * Post-traumatic epilepsy
 * Posterior urethral valve
 * Postpartum depression
 * Posttraumatic stress disorder
 * Potassium-aggravated myotonia
 * Potter sequence
 * Poxviridae
 * Prader–Willi syndrome
 * Pre-eclampsia
 * Precocious puberty
 * Prekallikrein
 * Premature ovarian failure
 * Premature ventricular contraction
 * Premenstrual dysphoric disorder
 * Presbycusis
 * Presbyopia
 * Presumed ocular histoplasmosis syndrome
 * Primary aldosteronism
 * Primary biliary cirrhosis
 * Primary ciliary dyskinesia
 * Primary cutaneous amyloidosis
 * Primary hyperoxaluria
 * Primary hyperparathyroidism
 * Primary hypertrophic osteoathropathy
 * Primary lateral sclerosis
 * Primary polydipsia
 * Primary progressive aphasia
 * Primary sclerosing cholangitis
 * Primary tumors of the heart
 * Primitive neuroectodermal tumor
 * Primordial dwarfism
 * Primrose syndrome
 * Prinzmetal's angina
 * Problem gambling
 * Procrastination
 * Proctitis
 * Progeria
 * Progeroid syndromes
 * Progressive familial intrahepatic cholestasis
 * Progressive multifocal leukoencephalopathy
 * Progressive muscular atrophy
 * Progressive myoclonus epilepsy
 * Progressive osseous heteroplasia
 * Progressive supranuclear palsy
 * Progressive systemic sclerosis
 * Prolidase deficiency
 * Proliferating trichilemmal cyst
 * Prolymphocytic leukemia
 * Promoter (genetics)
 * Properdin deficiency
 * Propionic acidemia
 * Prosopamnesia
 * Prostate cancer
 * Prostatitis
 * Protein C deficiency
 * Protein S deficiency
 * Protein–energy malnutrition
 * Proteus syndrome
 * Proximal renal tubular acidosis
 * Prune belly syndrome
 * Prurigo nodularis
 * Pruritus ani
 * Pseudo-Hurler polydystrophy
 * Pseudoachondroplasia
 * Pseudocholinesterase deficiency
 * Pseudohermaphroditism
 * Pseudohypoaldosteronism
 * Pseudohypoparathyroidism
 * Pseudomonas aeruginosa
 * Pseudomonas infection
 * Pseudomonas oryzihabitans
 * Pseudomonas stutzeri
 * Pseudomyxoma peritonei
 * Pseudopelade of Brocq
 * Pseudovaginal perineoscrotal hypospadias
 * Pseudoxanthoma elasticum
 * Psittacosis
 * Psoriasis
 * Psychogenic amnesia
 * Psychological abuse
 * Psychosis
 * Psychosomatic medicine
 * Pterygium
 * Ptosis
 * Puerperal fever
 * Pulmonary alveolar proteinosis
 * Pulmonary hypertension
 * Pulmonary sequestration
 * Pulmonary valve stenosis
 * Pulmonic stenosis
 * Pure red cell aplasia
 * Purine nucleoside phosphorylase deficiency
 * Purpura
 * Pyaemia
 * Pycnodysostosis
 * Pyelonephritis
 * Pyoderma faciale
 * Pyoderma gangrenosum
 * Pyomyositis
 * Pyridoxine deficiency
 * Pyrophobia
 * Pyrosis
 * Pyruvate carboxylase deficiency
 * Pyruvate dehydrogenase deficiency
 * Pyruvate kinase deficiency
 * Q fever
 * Qazi–Markouizos syndrome
 * Quadrantanopia
 * Quadriceps tendon rupture
 * Quebec platelet disorder
 * Queensland tick typhus
 * Rabies
 * Rabson–Mendenhall syndrome
 * Radiofrequency ablation
 * Radiophobia
 * Raine syndrome
 * Ramos-Arroyo syndrome
 * Ramsay Hunt syndrome
 * Ramsay Hunt syndrome type II
 * Raoul Bensaude
 * Rapadilino syndrome
 * Rapp–Hodgkin syndrome
 * Rapunzel syndrome
 * Rasmussen's encephalitis
 * Raynaud's phenomenon
 * Reactive airway disease
 * Reactive arthritis
 * Reactive attachment disorder
 * Reactive hypoglycemia
 * Refsum disease
 * Relapsing polychondritis
 * Renal agenesis
 * Renal artery stenosis
 * Renal cell carcinoma
 * Renal dysplasia-limb defects syndrome
 * Renal failure
 * Renal glycosuria
 * Renal osteodystrophy
 * Renal tubular acidosis
 * Renovascular hypertension
 * Reperfusion injury
 * Repetitive strain injury
 * Respiratory acidosis
 * Restless legs syndrome
 * Restrictive cardiomyopathy
 * Reticulated seborrheic keratosis
 * Reticulocytopenia
 * Retina
 * Retinitis pigmentosa
 * Retinoblastoma
 * Retinopathy
 * Retinopathy of prematurity
 * Retinoschisis
 * Retrograde amnesia
 * Retroperitoneal fibrosis
 * Rett syndrome
 * Revesz syndrome
 * Reye syndrome
 * Reynolds syndrome
 * Rh disease
 * Rhabditida
 * Rhabdomyolysis
 * Rhabdomyosarcoma
 * Rheumatic fever
 * Rheumatism
 * Rheumatoid arthritis
 * Rheumatoid factor
 * Rheumatoid vasculitis
 * Rhinophyma
 * Richter's transformation
 * Rickets
 * Rickettsialpox
 * Rickettsiosis
 * Rift Valley fever
 * Ring 18
 * Ring chromosome 20 syndrome
 * Roberts syndrome
 * Robinow syndrome
 * Rocker bottom foot
 * Rocky Mountain spotted fever
 * Romano–Ward syndrome
 * Rombo syndrome
 * Rosacea
 * Rosacea conglobata
 * Rosai–Dorfman disease
 * Rosselli–Gulienetti syndrome
 * Rothmund–Thomson syndrome
 * Rotor syndrome
 * Roussy–Lévy syndrome
 * Rubella
 * Rubinstein–Taybi syndrome
 * Rudiger syndrome
 * Rumination syndrome
 * Ruzicka Goerz Anton syndrome
 * Saal Bulas syndrome
 * Saal Greenstein syndrome
 * Sabinas brittle hair syndrome
 * Saccharopinuria
 * Sacral plexus
 * Sadistic personality disorder
 * Saethre–Chotzen syndrome
 * Sakati–Nyhan–Tisdale syndrome
 * Salivary gland
 * Salla disease
 * Salmonellosis
 * Sandhoff disease
 * Sanfilippo syndrome
 * SAPHO syndrome
 * Sarcoidosis
 * Sarcoma botryoides
 * Sarcosinemia
 * Satoyoshi syndrome
 * Say–Meyer syndrome
 * Scabies
 * Scalp–ear–nipple syndrome
 * Scar tissue
 * Scar Tissue
 * SCARF syndrome
 * Scarlet fever
 * Schamberg disease
 * Scheie syndrome
 * Scheuermann's disease
 * Schindler disease
 * Schinzel–Giedion syndrome
 * Schistosomiasis
 * Schizencephaly
 * Schizoaffective disorder
 * Schizoid personality disorder
 * Schizophrenia
 * Schizophreniform disorder
 * Schizotypal personality disorder
 * Schmitt Gillenwater Kelly syndrome
 * Schwannomatosis
 * Schwartz–Jampel syndrome
 * Sciatica
 * Scimitar syndrome
 * Scleredema
 * Scleroderma
 * Sclerostin
 * Scoliosis
 * Scopophobia
 * Scotoma
 * Scott syndrome
 * Scrapie
 * Scurvy
 * Sea-blue histiocytosis
 * Seasonal affective disorder
 * Seaver Cassidy syndrome
 * Seborrheic keratosis
 * Secernentea
 * Seckel syndrome
 * Selective immunoglobulin A deficiency
 * Selective mutism
 * Selective serotonin reuptake inhibitor
 * Selenium
 * Self-defeating personality disorder
 * Seminoma
 * Senescence
 * Senior–Løken syndrome
 * Sensenbrenner syndrome
 * Sensorineural hearing loss
 * Sensory processing disorder
 * Senter syndrome
 * Separation anxiety disorder
 * Sepsis
 * Septic arthritis
 * Septic shock
 * Septicemic plague
 * Septo-optic dysplasia
 * Serpentine fibula-polycystic kidney syndrome
 * Serum sickness
 * Setleis syndrome
 * Severe acute respiratory syndrome
 * Severe combined immunodeficiency
 * Sex chromosome disorders
 * Sex linkage
 * Sexually transmitted disease
 * Shapiro syndrome
 * Sheehan's syndrome
 * Shellfish poisoning
 * Shigellosis
 * Shock (circulatory)
 * Short bowel syndrome
 * Short QT syndrome
 * Short rib – polydactyly syndrome
 * SHORT syndrome
 * Short-chain acyl-coenzyme A dehydrogenase deficiency
 * Shwachman–Diamond syndrome
 * Shwartzman phenomenon
 * Sialadenitis
 * Sialidosis
 * Sialuria
 * Sickle-cell disease
 * Sideroblastic anemia
 * Siderosis
 * Silent sinus syndrome
 * Silicosis
 * Silver–Russell syndrome
 * Simpson–Golabi–Behmel syndrome
 * Singleton Merten syndrome
 * Sirenomelia
 * Sitosterolemia
 * Situs ambiguus
 * Situs inversus
 * Sixth nerve palsy
 * Sjögren's syndrome
 * Sjögren–Larsson syndrome
 * Sleepwalking
 * Sly syndrome
 * Small cleaved cells
 * Small-cell carcinoma
 * Smallpox
 * Smith–Fineman–Myers syndrome
 * Smith–Lemli–Opitz syndrome
 * Smith–Magenis syndrome
 * Sneddon's syndrome
 * Social anxiety disorder
 * Soft-tissue sarcoma
 * Somatization disorder
 * Somatostatinoma
 * Sotos syndrome
 * Source amnesia
 * Spasmodic dysphonia
 * Spasmodic torticollis
 * Specific phobia
 * Spermatogenesis arrest
 * Spherocytosis
 * Sphingolipidoses
 * Spina bifida
 * Spinal and bulbar muscular atrophy
 * Spinal cord injury
 * Spinal muscular atrophies
 * Spinal muscular atrophy
 * Spinal muscular atrophy with progressive myoclonic epilepsy
 * Spinal shock
 * Spinal stenosis
 * Spinal tumor
 * Spinocerebellar ataxia
 * Spirochaete
 * Spirurida
 * Splenic disease
 * Splenic flexure syndrome
 * Splenomegaly
 * Spondylitis
 * Spondyloarthropathy
 * Spondylocostal dysostosis
 * Spondyloepimetaphyseal dysplasia
 * Spondyloepiphyseal dysplasia congenita
 * Sporotrichosis
 * Spotted fever
 * Sprengel's deformity
 * Squamous-cell carcinoma
 * St. Anthony's fire
 * Staphylococcal infection
 * Staphylococcal scalded skin syndrome
 * Staphylococcus aureus
 * Staphylococcus epidermidis
 * Steatocystoma multiplex
 * Sternal cleft
 * Steroid rosacea
 * Stevens–Johnson syndrome
 * Stickler syndrome
 * Stiff person syndrome
 * Stiff skin syndrome
 * Stimmler syndrome
 * Stimulant psychosis
 * Stomach cancer
 * Stomatitis
 * Strabismus
 * Stratton Parker syndrome
 * Streptococcal pharyngitis
 * Strongyloidiasis
 * Strychnine poisoning
 * Stucco keratosis
 * Sturge–Weber syndrome
 * Stye
 * Subacute sclerosing panencephalitis
 * Subvalvular aortic stenosis (non-human)
 * Succinic semialdehyde dehydrogenase deficiency
 * Succinyl-CoA:3-oxoacid CoA transferase deficiency
 * Sucrose intolerance
 * Sudden cardiac death
 * Sudden infant death syndrome
 * Sugarman syndrome
 * Sulfite oxidase
 * Superior mesenteric artery syndrome
 * Susac's syndrome
 * Swine influenza
 * Sydenham's chorea
 * Syncope (medicine)
 * Syndactyly
 * Syndrome of inappropriate antidiuretic hormone secretion
 * Synechia (eye)
 * Synesthesia
 * Synovial osteochondromatosis
 * Synovial sarcoma
 * Synovitis
 * Synpolydactyly
 * Syphilis
 * Syringobulbia
 * Syringocystadenoma papilliferum
 * Syringoma
 * Syringomyelia
 * Systemic lupus erythematosus
 * Systemic primary carnitine deficiency
 * Systemic scleroderma
 * Sézary's disease
 * T-cell acute lymphoblastic leukemia
 * T-cell lymphoma
 * T-cell prolymphocytic leukemia
 * Tachycardia
 * Taeniasis
 * Takayasu's arteritis
 * Tangier disease
 * Tar acne
 * TAR syndrome
 * Tardive dyskinesia
 * Tarsal tunnel syndrome
 * Taurodontism
 * Tay–Sachs disease
 * Telangiectasia
 * Temporal lobe epilepsy
 * Temporomandibular joint dysfunction
 * Teratoma
 * Testicular cancer
 * Tetanus
 * Tethered spinal cord syndrome
 * Tetrahydrobiopterin deficiency
 * Tetralogy of Fallot
 * Tetraplegia
 * Thalassemia
 * Thalidomide
 * Thin basement membrane disease
 * Thoracic outlet syndrome
 * Thrombin
 * Thromboangiitis obliterans
 * Thrombocytopenia
 * Thrombocytosis
 * Thrombotic thrombocytopenic purpura
 * Thrombus
 * Thymic carcinoma
 * Thymoma
 * Thyroglossal cyst
 * Thyroid cancer
 * Thyroid dysgenesis
 * Thyroid hormone resistance
 * Tibialis posterior muscle
 * Tick paralysis
 * Tick-borne encephalitis
 * Tietz syndrome
 * Tietze syndrome
 * Tinnitus
 * TNF receptor associated periodic syndrome
 * Todd's paresis
 * Togaviridae
 * Tokophobia
 * Tolosa–Hunt syndrome
 * Toluene toxicity
 * Tooth and nail syndrome
 * Tooth fusion
 * Torsades de pointes
 * Torticollis
 * Tourette syndrome
 * Townes–Brocks syndrome
 * Toxic epidermal necrolysis
 * Toxic shock syndrome
 * Toxiphobia
 * Toxocariasis
 * Toxoplasmic chorioretinitis
 * Toxoplasmosis
 * Tracheal agenesis
 * Tracheobronchomalacia
 * Tracheobronchomegaly
 * Tracheoesophageal fistula
 * Trachoma
 * Transient acantholytic dermatosis
 * Transient erythroblastopenia of childhood
 * Transient global amnesia
 * Transient neonatal diabetes mellitus
 * Transitional cell carcinoma
 * Transmissible spongiform encephalopathy
 * Transposition of the great vessels
 * Transthyretin-related hereditary amyloidosis
 * Transverse myelitis
 * Treacher Collins syndrome
 * Tree nut allergy
 * Tremor
 * Treponema pallidum
 * Trevor disease
 * Trichinosis
 * Tricho-hepato-enteric syndrome
 * Trichofolliculoma
 * Trichomoniasis
 * Trichostasis spinulosa
 * Trichothiodystrophy
 * Trichotillomania
 * Tricho–dento–osseous syndrome
 * Tricuspid atresia
 * Tricyclic antidepressant overdose
 * Trigeminal neuralgia
 * Trigger finger
 * Trigonocephaly
 * Trimethylaminuria
 * Triosephosphate isomerase deficiency
 * Triple X syndrome
 * Triple-A syndrome
 * Triploid syndrome
 * Trisomy
 * Trisomy 16
 * Trisomy 22
 * Trisomy 8
 * Trisomy 9
 * Tropical acne
 * Tropical spastic paraparesis
 * Tropical sprue
 * Tsukuhara syndrome
 * Tuber cinereum hamartoma
 * Tuberculosis
 * Tuberculous meningitis
 * Tuberous sclerosis
 * Tufted angioma
 * Tularemia
 * Tummy tuck
 * Tungiasis
 * Turner syndrome
 * Twin-to-twin transfusion syndrome
 * Type I hypersensitivity
 * Type I tyrosinemia
 * Type II hypersensitivity
 * Type III hypersensitivity
 * Type IV hypersensitivity
 * Typhoid fever
 * Typhus
 * Tyrosinemia
 * Tyrosinemia type II
 * Uhl anomaly
 * Ulcerative colitis
 * Ulnar–mammary syndrome
 * Umbilical cord ulceration and intestinal atresia
 * Uncombable hair syndrome
 * Uniparental disomy
 * Unsafe abortion
 * Unverricht–Lundborg disease
 * Upington disease
 * Urachal cancer
 * Urachal cyst
 * Urbach–Wiethe disease
 * Urban–Rogers–Meyer syndrome
 * Urea cycle disorder
 * Uremia
 * Uridine monophosphate synthetase
 * Urinary system
 * Urocanic aciduria
 * Urofacial syndrome
 * Urticaria
 * Urticaria pigmentosa
 * Urticarial vasculitis
 * Usher syndrome
 * Uvea
 * Uveal melanoma
 * Uveitis
 * Vaccine controversies
 * VACTERL association
 * Vaginismus
 * Vaginitis
 * Van der Woude syndrome
 * Van Goethem syndrome
 * Vancomycin-resistant Enterococcus
 * Varicella zoster virus
 * Variegate porphyria
 * Vascular dementia
 * Vasculitis
 * Vasovagal response
 * Vein of Galen aneurysmal malformations
 * Velopharyngeal inadequacy
 * Ventricular fibrillation
 * Ventricular septal defect
 * Ventricular system
 * Vernal keratoconjunctivitis
 * Vertically transmitted infection
 * Very long-chain acyl-coenzyme A dehydrogenase deficiency
 * Vestibular schwannoma
 * Vestibulocochlear dysfunction progressive familial
 * VIPoma
 * Viral hemorrhagic fever
 * Visual agnosia
 * Vitamin B12 deficiency
 * Vitamin B6
 * Vitamin E deficiency
 * Vitelliform macular dystrophy
 * Vitiligo
 * VLDLR-associated cerebellar hypoplasia
 * Vogt–Koyanagi–Harada syndrome
 * Von Hippel–Lindau disease
 * Von Willebrand disease
 * Vulvodynia
 * Waardenburg syndrome
 * Wagner's disease
 * WAGR syndrome
 * Waldenström's macroglobulinemia
 * Waldmann disease
 * Wallerian degeneration
 * Wallis–Zieff–Goldblatt syndrome
 * Wandering spleen
 * Warfarin necrosis
 * Warkany syndrome
 * Wart
 * Waterhouse–Friderichsen syndrome
 * Watson syndrome
 * Weaver syndrome
 * Webbed neck
 * Weill–Marchesani syndrome
 * Weissenbacher–Zweymüller syndrome
 * Werner syndrome
 * Wernicke's encephalopathy
 * Wernicke–Korsakoff syndrome
 * West Nile virus
 * Western equine encephalitis virus
 * Wheat allergy
 * Whipple's disease
 * White sponge nevus
 * Wiedemann-Rautenstrauch syndrome
 * Wildervanck syndrome
 * Williams syndrome
 * Wilms' tumor
 * Wilson's disease
 * Wilson–Turner syndrome
 * Winchester syndrome
 * Wiskott–Aldrich syndrome
 * Wolcott–Rallison syndrome
 * Wolff–Parkinson–White syndrome
 * Wolfram syndrome
 * Wolf–Hirschhorn syndrome
 * Wolman disease
 * Woodhouse–Sakati syndrome
 * Worster-Drought syndrome
 * Worth syndrome
 * Wrinkly skin syndrome
 * Writer's cramp
 * X-linked adrenal hypoplasia congenita
 * X-linked agammaglobulinemia
 * X-linked congenital stationary night blindness
 * X-linked dominant inheritance
 * X-linked hypophosphatemia
 * X-linked ichthyosis
 * X-linked intellectual disability
 * X-linked lymphoproliferative disease
 * X-linked recessive chondrodysplasia punctata
 * X-linked severe combined immunodeficiency
 * Xanthinuria
 * Xeroderma
 * Xeroderma pigmentosum
 * Xerophthalmia
 * Xerostomia
 * XX gonadal dysgenesis
 * XX male syndrome
 * XXYY syndrome
 * XY gonadal dysgenesis
 * XYY syndrome
 * Y chromosome
 * Y chromosome microdeletion
 * Yaws
 * Yellow fever
 * Yellow nail syndrome
 * Yemenite deaf-blind hypopigmentation syndrome
 * Yersinia enterocolitica
 * Yersinia pestis
 * Yersinia pseudotuberculosis
 * Yersiniosis
 * Yim–Ebbin syndrome
 * Young's syndrome
 * Young–Simpson syndrome
 * Yunis–Varon syndrome
 * Yushō disease
 * Zadik–Barak–Levin syndrome
 * Zamzam–Sheriff–Phillips syndrome
 * ZAP70 deficiency
 * Zellweger syndrome
 * Zenker's diverticulum
 * Zieve's syndrome
 * Zimmermann–Laband syndrome
 * Zinc deficiency
 * Zinc toxicity
 * Zollinger–Ellison syndrome
 * Zonular cataract and nystagmus
 * Zori–Stalker–Williams syndrome
 * Zunich–Kaye syndrome
 * Zuska's disease
 * Zygomycosis