Hirsutism
Hirsutism
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Hirsutism

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Hirsutism

Hirsutism is excessive body hair on parts of the body where hair is normally absent or minimal. The word is from the early 17th century: from Latin hirsutus meaning "hairy". It usually refers to a male pattern of hair growth in a female that may be a sign of a more serious medical condition, especially if it develops well after puberty. Cultural stigma against hirsutism can cause much psychological distress and social difficulty. Discrimination based on facial hirsutism often leads to the avoidance of social situations and to symptoms of anxiety and depression.

Hirsutism is usually the result of an underlying endocrine imbalance, which may be adrenal, ovarian, or central. It can be caused by increased levels of androgen hormones. The amount and location of the hair is measured by a Ferriman–Gallwey score. It is different from hypertrichosis, which is excessive hair growth anywhere on the body.

Treatments may include certain birth control pills, antiandrogens, or insulin sensitizers.

Hirsutism affects between 5 and 15% of women across all ethnic backgrounds. Depending on the definition and the underlying data, approximately 40% of women have some degree of facial hair. About 10 to 15% of cases of hirsutism are idiopathic with no known cause.

The causes of hirsutism can be divided into endocrine imbalances and non-endocrine etiologies. It is important to begin by first determining the distribution of body hair growth. If hair growth follows a male distribution, it could indicate the presence of increased androgens or hyperandrogenism. However, there are other hormones not related to androgens that can lead to hirsutism. A detailed history is taken by a provider in search of possible causes for hyperandrogenism or other non-endocrine-related causes. If the distribution of hair growth occurs throughout the body, this is referred to as hypertrichosis, not hirsutism.

Endocrine causes of hirsutism include:

Causes of hirsutism not related to hyperandrogenism include:

Hirsutism is a clinical diagnosis of excessive androgenic, terminal hair growth. A complete physical evaluation should be done prior to initiating more extensive studies, the examiner should differentiate between widespread body hair increase and male pattern virilization. One method of evaluating hirsutism is the Ferriman-Gallwey Score which gives a score based on the amount and location of hair growth. The Ferriman-Gallwey Score has various cutoffs due to variable expressivity of hair growth based on ethnic background.

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