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Hypertrichosis

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  1. See Also
    1. Hirsutism
  2. Definition
    1. Vellus Hairs
      1. Non-pigmented fine "peach fuzz" hair covering body
      2. Found in children and adults
    2. Hypertrichosis is an increase in Vellus Hair growth
      1. Not androgen dependent (contrast with Hirsutism)
  3. Causes
    1. Medications
      1. Cyclosporine
      2. Penicillamine
      3. Phenytoin
      4. Streptomycin
      5. Corticosteroids
      6. Penicillamine
      7. Diazoxide
      8. Minoxidil
    2. Underlying disease
      1. Hypothyroidism
      2. Anorexia Nervosa
      3. Dermatomyositis
      4. Epidermolysis bullosa
      5. Malnutrition
      6. Porphyria
    3. Congenital syndromes
      1. Hurler's Syndrome
      2. Trisomy 18
      3. Fetal Alcohol Syndrome
    4. Normal states
      1. Advanced age
      2. Ethnic background
      3. Pregnancy
  4. Differential Diagnosis
    1. Hirsutism
      1. Excessive androgen-dependent pigmented Hair Growth

Hypertrichosis (C0020555)

Definition (MSH)Excessive hair growth at inappropriate locations, such as on the extremities, the head, and the back. It is caused by genetic or acquired factors, and is an androgen-independent process. This concept does not include HIRSUTISM which is an androgen-dependent excess hair growth in WOMEN and CHILDREN.
ConceptsDisease or Syndrome (T047)
ICD9704.1
EnglishExcessive growth of hair, Excessive hair growth, Excessive hairiness, Hairiness, HYPERTRICHIASIS, Hypertrichoses, Hypertrichosis, Pilosis, Polytrichia, Polytrichosis
Spanishcrecimiento excesivo de cabello, hipertricosis, hipertriquiasis, politricosis, politriquia
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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