User:Gyno.Janine/sandbox

Vaginal bleeding is any bleeding through the vagina, including bleeding from the vaginal wall itself, as well as (and more commonly) bleeding from another location of the female reproductive system, often the uterus. Generally, it is either part of a normal menstrual cycle or is caused by hormonal or other problems of the reproductive system, such as abnormal uterine bleeding. Vaginal bleeding during pregnancy may indicate a possible pregnancy complication that needs to be medically addressed.

Blood loss per vaginam (Latin: through the vagina) (PV) typically arises from the lining of the uterus (endometrium), but may arise from uterine or cervical lesions, the vagina, and rarely from the fallopian tube. During pregnancy it is usually but not always related to the pregnancy itself. Regular monthly vaginal bleeding during the reproductive years, menstruation, is a normal physiologic process. During the reproductive years, bleeding that is excessively heavy (menorrhagia or heavy menstrual bleeding), occurs between monthly menstrual periods (intermenstrual bleeding), occurs more frequently than every 21 days (abnormal uterine bleeding), occurs too infrequently (oligomenorrhea), or occurs after vaginal intercourse (postcoital bleeding) should be evaluated. The causes of abnormal vaginal bleeding vary by age, and such bleeding can be a sign of specific medical conditions ranging from hormone imbalances or anovulation to malignancy (cervical cancer, vaginal cancer or uterine cancer). In young children, or elderly adults with cognitive impairment, the source of bleeding may not be obvious, and may be from the urinary tract (hematuria) or the rectum rather than the vagina, although most adult women can identify the site of bleeding. When vaginal bleeding occurs in prepubertal children or in postmenopausal women, it always needs investigation.

Differential diagnosis
The parameters for normal menstruation have been defined as a result of an international process designed to simplify terminologies and definitions for abnormalities of menstrual bleeding. The causes of abnormal vaginal bleeding vary by age.

Vaginal bleeding in children
Bleeding in children is of concern if it occurs before the expected time of menarche and in the absence of appropriate pubertal development. Bleeding before the onset of pubertal development deserves evaluation. It could result from local causes or from hormonal factors. In children, it may be challenging to determine the source of bleeding, and "vaginal" bleeding may actually arise from the bladder or urethra, or from the rectum.

Vaginal bleeding in the first week of life after birth is a common observation, and pediatricians typically discuss this with new mothers at the time of hospital discharge. During childhood, other possible causes include the presence of a foreign body in the vagina, trauma (either accidental or non accidental, ie child sexual abuse or molestation), urethral prolapse, vaginal infection (vaginitis), vulvar ulcers, vulvar skin conditions such as lichen sclerosus, and rarely, a tumor (benign or malignant vaginal tumors, or hormone-producing ovarian tumors). Hormonal causes include central precocious puberty, or peripheral precocious puberty (McCune-Albright syndrome), or primary hypothyroidism. While the symptom is typically alarming to parents, most causes are benign, although sexual abuse or tumor are particularly important to exclude. An examination under anesthesia (EUA) may be necessary to exclude a vaginal foreign body or tumor, although instruments designed for office hysteroscopy can sometimes be used in children with topical anesthesia for office vaginoscopy, precluding the need for sedation or general anesthesia and OR time.

Premenopausal women
In premenopausal women, bleeding may occur as a result of a pregnancy complication, such as a spontaneous abortion, ectopic pregnancy, or abnormal growth of the placenta, even if the woman is not away of the pregnancy. This possibility must be kept in mind with regard to diagnosis and management. In addition, the possibility that the bleeding does not arise from the uterus itself must be kept in mind, and a gynecologic examination should be performed to look for vulvar or vaginal lesions, and cervical causes of bleeding such as cervicitis from an STI.

The causes of abnormal uterine bleeding in premenopausal women who are not pregnant have been classified using the FIGO (International Federation of Gynecology and Obstetrics) PALM-COEIN system. This acronym stands for Polyp, Adenomyosis, Leiomyoma, Malignancy and Hyperplasia, Coagulopathy, Ovulatory Disorders, Endometrial Disorders, Iatrogenic Causes, and Not Classified. The FIGO Menstrual Disorders Group, with input from international experts, recommended a simplified description of abnormal bleeding that discarded imprecise terms such as menorrhagia, metrorrhagia, hypermenorrhea, and dysfunctional uterine bleeding (DUB) in favor of plain English descriptions of bleeding that describe the vaginal bleeding in terms of cycle regularity, frequency, duration, and volume.

The PALM causes are related to uterine structural, anatomic, and histolopathologic causes that can be assessed with imaging techniques such as ultrasound or biopsy to view the histology of a lesion. Endometrial polyps are benign growths that are typically detected during gynecologic ultrasonography and confirmed using saline infusion sonography or hysteroscopy, often in combination with an endometrial biopsy providing histopathologic confirmation. Endocervical polyps are visible at the time of a gynecologic examination using a vaginal speculum, and can often be removed with a minor office procedure. Adenomyosis is a condition in which endometrial glands are present within the muscle of the uterus (myometrium), and the pathogenesis and mechanism by which it causes abnormal bleeding have been debated. Uterine leiomyoma, commonly termed uterine fibroids, are common, and most fibroids are asymptomatic. The presence of leiomyomas may not be the cause of abnormal bleeding, although fibroids that are submucosal in location are the most likely to cause abnormal bleeding. The Malignancy and Hyperplasia category of the PALM-COEIN system includes malignancies of the genital tract, including cancers of the vulva, the vagina, the cervix, and the uterus. Endometrial hyperplasia, included in this PALM category of abnormal bleeding, is more common in women who are obese or who have a history of chronic anovulation. When endometrial hyperplasia is associated with atypical cells, it can progress to cancer or occur concurrently with it. While endometrial hyperplasia and endometrial cancer occur most commonly among post-menopausal women, most women with endometrial cancer have abnormal bleeding, and thus the diagnosis must be considered in women during the reproductive years.

The COEIN causes of abnormal bleeding are not related to structural causes. Causes of abnormal bleeding, most commonly heavy menstrual bleeding, can be related to blood clotting disorders, or Coagulopathies. Von Willebrand disease is the most common coagulopathy, and most women with von Willebrand disease have heavy menstrual bleeding. Of women with heavy menstrual bleeding, up to 20% will have a bleeding disorder. Heavy menstrual bleeding since menarche is a common symptom for women with bleeding disorders, and in retrospective studies, bleeding disorders have been found in up to 62% of adolescents with heavy menstrual bleeding. Ovulatory dysfunction or anovulation is a common cause of abnormal bleeding that may lead to irregular and unpredictable bleeding, as well as variations in the amount of flow including heavy bleeding. Endocrine causes of ovulatory disorders include polycystic ovary syndrome (PCOS), thyroid disorders, hyperprolactinemia, obesity, eating disorders including anorexia nervosa or bulimia, or to an imbalance between exercise and caloric intake. Endometrial causes of abnormal bleeding include infection of the endometrium, endometritis, which may occur after a miscarriage (spontaneous abortion) or a delivery, or may be related to a sexually-transmitted infection of the uterus, fallopian tubes or pelvis generally termed pelvic inflammatory disease (PID). Other endometrial causes of abnormal bleeding may relate to the ways that the endometrium heals itself or develops blood vessels. The most common Iatrogenic cause of abnormal bleeding relates to treatment with hormonal medications such as birth control pills, patches, rings, injections, implants, and intrauterine devices (IUDs). Hormone therapy for treatment of menopausal symptoms can also cause abnormal bleeding. Unscheduled bleeding that occurs during such hormonal treatment is termed "breakthrough bleeding" (BTB) Breakthrough bleeding may result from inconsistent use of hormonal treatment, although in the initial months after initiation of a method, it may occur even with perfect use, and may ultimately affect adherence to the medication regimen. The risk of breakthrough bleeding with oral contraceptives is greater if pills are missed. The Not Classified category of the PALM-COEIN system includes conditions that may be rare, or whose contribution to abnormal bleeding has not been well established or understood.

COPIED FROM ORIGINAL:

Women on hormonal contraceptives can experience breakthrough bleeding and/or withdrawal bleeding. Withdrawal bleeding occurs when a hormonal contraceptive or other hormonal intake is discontinued.

There are pathological causes of unusual vaginal bleeding as well. Dysfunctional uterine bleeding is a common cause of menorrhagia and irregular bleeding. It is due to a hormonal imbalance, and symptoms can be managed by use of hormonal contraception(although hormonal contraception does not treat the underlying cause of the imbalance). If it is due to polycystic ovary syndrome, weight loss may help, and infertility may respond to clomifene citrate. Uterine fibroids(leiomyoma) are benign tumors of the uterus that cause bleeding and pelvic pain in approximately 30% of affected women. Adenomyosis, a condition in which the endometrial glands grow into the uterine muscle, can cause dysmenorrhea and menorrhagia. Cervical cancer may occur at premenopausal age, and often presents as postcoital bleeding(e.g. after sexual intercourse). Uterine cancer leads to irregular and often prolonged bleeding. In recently pregnant women who have delivered or who have had a miscarriage, vaginal bleeding may be a sign of endometritis or retained products of conception.

History

Exam

OUTLINE FOR SIGNS AND SYMPTOMS


 * Definition (current definitions)
 * Differential diagnoses
 * Pathophysiology or Mechanism
 * Diagnostic approach or Evaluation
 * Treatment or Management (for the symptom itself, if any: e.g., analgesics for pain)
 * Epidemiology (incidence, prevalence, risk factors)
 * History (of the science, not of the patient: e.g., "The oldest surviving description is in a medical text written by Avicenna.")
 * Society and culture (e.g., cachexia was a literary symbol for tuberculosis in the 19th century and for AIDS in the 1980s.)
 * Research (Is anything important being done?)
 * Other animals