Treatment of seborrhoeic dermatitis of the scalp with ketoconazole shampoo. A double-blind study.

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Abstract
Thirty-six patients with seborrhoeic dermatitis of the scalp and culture positive for Pityrosporum ovale were treated in a double-blind placebo controlled study with ketoconazole shampoo twice weekly for 4 weeks. In the ketoconazole group, 16 of 18 patients (89%) became free of lesions or improved, compared with only 8 of 18 (p less than 0.01) in the placebo group. The patients found the shampoo effective, easy to use and cosmetically attractive.