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Hypertrichosis -clinical significance

Hypertrichosis is a condition where there is excessive growth of hair in generalized or localized pattern but this is not of male pattern of distribution.
Congenital hypertrichosis is seen in porphyria cutanea tarda, 
Hurler's syndrome, 
Giant pigmented naevus also called as [bathing suit naevus]
Acquired hypertrichosis is seen in the following conditions
  • Malignancy-bronchogenic carcinoma
  • Drugs-phenytoin, steroids,minoxidil, diazoxide, streptomycin.
  • Endocrine causes
  • Sexual precocity
  • Hypothyroidism
  • Adrenal hyperplasia or neoplasm