Perifolliculitis Capitis Abscedens et Suffodiens Treated with Systemic Isotretinoin Monotherapy: Case Report and Review of Current Therapeutic Options.

Perifolliculitis capitis abscedens et suffodiens (PCAS) is a rare, suppurative dermatosis of the scalp, the etiology of which remains unknown. It is characterized by the development of comedones, perifollicular pustules, firm or fluctuant and itchy or painful nodules and abscesses of the scalp, connected by communicating sinuses that may lead to the formation of scarring and irreversible alopecia. Treatment of PCAS is challenging, often leading to unsatisfactory results. We present a case of a 23-year-old Caucasian man with PCAS who was treated successfully with systemic isotretinoin monotherapy and we review the current therapeutic options.