II. 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)

III. Causes

  1. Medications
    1. See Medication Causes of Hypertrichosis
  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

IV. Differential Diagnosis

  1. Hirsutism
    1. Excessive androgen-dependent pigmented Hair Growth

V. Management

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Ontology: Hypertrichosis (C0020555)

Definition (NCI) Excessive hair growth anywhere on the body.
Definition (NCI_CTCAE) A disorder characterized by hair density or length beyond the accepted limits of normal in a particular body region, for a particular age or race.
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.
Concepts Disease or Syndrome (T047)
MSH D006983
ICD10 L68 , L68.3, L68.9
SnomedCT 156409007, 201164001, 40090008, 201165000, 29966009, 271607001
English Hypertrichoses, Hypertrichosis, HYPERTRICHOSIS, Hypertrichosis, unspecified, hypertrichosis (diagnosis), hypertrichosis, excess hair, Hypertrichosis [Disease/Finding], excessive hairiness, polytrichia (diagnosis), hypertrichosis polytrichia, polytrichia, Hypertrichosis NOS (disorder), Pilosis, Excessive hair growth (disorder), Polytrichia, Excessive hair growth, Hirsutism - hypertrichosis, Excessive hairiness, Excessive hair growth (finding), Hypertrichiasis, Hypertrichosis (disorder), Polytrichosis, Excessive growth of hair, Hairiness, excessive; hair growth, Hypertrichiasis, NOS, Hypertrichosis, NOS, Polytrichia, NOS, Polytrichosis, NOS, Hypertrichosis NOS
French HYPERTRICHOSE, Hypertrichoses, Hypertrichose
Portuguese HIPERTRICOSE, Hipertricoses, Hipertricose
Spanish HIPERTRICOSIS, hipertricosis, SAI (trastorno), hipertricosis, SAI, crecimiento excesivo de cabello (hallazgo), crecimiento excesivo de cabello, hipertricosis (trastorno), hipertricosis, hipertriquiasis, politricosis, politriquia, Trastornos hipertricósicos, Hipertricosis
German HYPERTRICHOSE, Hypertrichose, nicht naeher bezeichnet, Polytrichie, Hypertrichosen, Hypertrichose
Italian Politricosi, Ipertricosi
Japanese 多毛症, タモウショウ
Swedish Hypertrikos
Czech hypertrichóza, Hypertrichóza, Hypertrichózy
Finnish Hypertrikoosi
Russian GIPERTRIKHOZ, ГИПЕРТРИХОЗ
Korean 상세불명의 털과다증, 털과다증
Polish Owłosienie nadmierne
Hungarian Hypertrichosisok, Hypertrichosis
Norwegian Hypertrikose
Dutch overmatig; haargroei, Hypertrichose, niet gespecificeerd, Polytrichose, hypertrichose, overvloedige haargroei, Hypertrichose, Trichose, hyper-