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KMID : 0363219920300040551
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Korean Journal of Dermatology
1992 Volume.30 No. 4 p.551 ~ p.557
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Three Case of Unilateral Localized Hypertrichosis on the Face s
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Abstract
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Hypertrichosis is an overgrowth of hair not localizd to the androgen dependent areas of the skin. It may be congenital or acquired, localized or generalized. Localized hypertrichosis may occur in some types of pigmentary nevi, chronic
inflammation
or
irritation, topical application of androgen or steroid. & localized myxedema.
We report herein three cases of unilateral localized hypertrichosis with or without a brownish hyperpigmented patch developing on the face of a male adolescent.
There are no known causes of localized hypertrichosis. Histopathologically, it is characterized by increased melanin pigment in the basal layer of the epidermis & enlarged hair follicles containing coarser hair. Electron microscopic finding show
mormal
size & number of melanosomes in both melaocytes & keratinocytes.
Our cases differ from Becker's nevus in both clinical & histopathologic characteristics.
(Kor J Dermatol 1992;30(4):551-557)
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