Keratoderma

Keratoderma is a hornlike skin condition.

Classification
The keratodermas are classified into the following subgroups:

Congenital

 * Simple keratodermas
 * Diffuse palmoplantar keratodermas
 * Diffuse epidermolytic palmoplantar keratoderma
 * Diffuse nonepidermolytic palmoplantar keratoderma
 * mal de Meleda
 * Focal palmoplantar keratoderma
 * Striate palmoplantar keratoderma
 * Punctate palmoplantar keratoderma
 * Keratosis punctata palmaris et plantaris
 * Spiny keratoderma
 * Focal acral hyperkeratosis
 * Complex keratodermas
 * Diffuse palmoplantar keratoderma
 * Erythrokeratodermia variabilis
 * Palmoplantar keratoderma of Sybert
 * Olmsted syndrome
 * Naegeli–Franceschetti–Jadassohn syndrome
 * Focal palmoplantar keratoderma
 * Papillon–Lefèvre syndrome
 * Pachyonychia congenita type I
 * Pachyonychia congenita type II
 * Focal palmoplantar keratoderma with oral mucosal hyperkeratosis
 * Camisa disease
 * Ectodermal dysplasias
 * Clouston's hidrotic ectodermal dysplasia
 * Acrokeratotic poikiloderma
 * Dermatopathic pigmentosa reticularis
 * Syndromic keratodermas
 * Vohwinkel syndrome
 * Palmoplantar keratoderma associated with esophageal cancer
 * Palmoplantar keratoderma and spastic paraplegia
 * Naxos disease
 * Striate palmoplantar keratoderma, woolly hair, and left ventricular dilated cardiomyopathy
 * Keratitis-ichthyosis-deafness syndrome
 * Corneodermatosseous syndrome
 * Huriez syndrome
 * Oculocutaneous tyrosinemia
 * Cardiofaciocutaneous syndrome
 * Schöpf–Schulz–Passarge syndrome

Acquired

 * Acquired keratodermas
 * AIDS-associated keratoderma
 * Arsenical keratoses
 * Calluses
 * Climacteric keratoderma
 * Clavi (Corns)
 * Eczema
 * Human papillomavirus
 * Keratoderma blenorrhagicum
 * Lichen planus
 * Norwegian scabies
 * Paraneoplastic keratoderma
 * Psoriasis
 * Reactive arthritis
 * Secondary syphilis
 * Tinea pedis
 * Sézary syndrome
 * Tuberculosis verrucosa cutis
 * Drug-induced keratoderma