[Acne conglobata: unusual course in 13-cis-retinoic acid therapy].

Four weeks after the introduction of a therapeutic regimen with 80 mg 13-cis-retinoic acid/day, a 16-year-old male patient developed oozing hypergranulation with vulnerable masses within acne lesions. These local symptoms were accompanied by fever, fatigue, weight loss, polyarthralgia and myalgia, similar to acne fulminans. In spite of these unusual reactions treatment was continued. Local steroid ointments were additionally applied. Within a short period of time regression of granulations and normalization of the general health condition was observed. After 4 months, therapy was discontinued. The patient's acne had totally healed and did not relapse within an observation period of 2 years.