Acne fulminans successfully treated with cyclosporine and isotretinoin

Abstract

A 15-year-old white male patient with severe acne flare was referred to our hospital. Diagnosis was acne vulgaris for the past 2 years, treated with topical antibiotics. Six months before the consultation, the lesions worsened and a diagnosis of acne conglobata was made. He was treated with isotretinoin 20 mg/day and prednisone 15 mg/day, but there was no clinical improvement. Isotretinoin dosage was increased to 30 mg/day, but 3 weeks later multiple reddish papulonodular and ulcerated lesions with hemorrhagic crusts suddenly developed on his face, neck, and trunk. The lesions were painful, and arthralgias and temperature up to 39°C were noted (Fig 1). Abnormal laboratory findings included elevated C-reactive protein levels (5 mg/dL; normal < 1 mg/dL) and leukocytosis (15,700 cells/mm3) with neutrophilia (68.8%). AF was diagnosed, and treatment with prednisone 60 mg/day and isotretinoin 20 mg/day was initially successful. Nevertheless progressive worsening was observed in the following weeks while prednisone was tapered and isotretinoin increased to 30 mg/day. He was treated with potassium permanganate baths and topical antibiotics. Oral cyclosporine 5 mg/kg/day plus isotretinoin 30 mg/day was initiated and systemic steroids were stopped. After a few weeks, the lesions improved, and 4 months later, cyclosporine was discontinued. A total dose of isotretinoin 100 mg/kg could be completed, and he presented an almost complete resolution of the inflammatory lesions with some residual scarring (Fig 2). No significant side effects or laboratory abnormalities were observed during treatment.