Reversal of androgenic alopecia by minoxidil: lack of effect of simultaneously administered intermediate doses of cyproterone acetate.

A male volunteer with frontal alopecia was treated simultaneously with 20 mg cyproterone acetate and 5 mg minoxidil topically (daily). During treatment with both drugs, new hair growth was observed on the alopecic scalp. The new hair was lost after discontinuing minoxidil treatment, although cyproterone acetate treatment was continued.