Male androgenetic alopecia (AGA) is the most frequent type of thinning or loss of hair in males. The condition, also known as male pattern baldness, causes hair loss as early as late adolescence. Polygenic heredity is assumed to be the primary cause, although the male hormone testosterone plays an important role, seemingly independent of genetic predisposition. In the hair follicle cells, testo...

In an inherited genetic hypersensitivity, normai levels of androgens may cause cosmetic disturbances or even dermatologica! diseases: acne and alopecia. The cosmetic dermatologist is called for help. Androgenetic stimulation leads to increased levels of sebum, to an imbalance of lipids on the skin surface, to follicular hyperkeratosis and, finally, to the fonnation of comedones. In those patien...