[Sensitizing effect of a 20% benzoyl peroxide preparation used for the treatment of leg ulcer].

The investigation of patients with leg ulcers, treated with a concentrated benzoylperoxide solution, revealed a sensitization to the substance in nearly half of the probands. Therefore and because of the probable promotion of neoplastic epidermal proliferation, benzoylperoxide-containing solutions should be used for the treatment of leg ulcers in selected cases only.