Cyclosporine-Induced Folliculodystrophy

A 34-year-old kidney transplant patient developed a unique skin condition due to cyclosporine, characterized by flesh-colored, follicular papules on the face, trunk, and extremities. This case, along with 2 previous reports, suggested that immunosuppressive doses of cyclosporine were the cause. The authors detailed the clinical and histologic findings and proposed the term "cyclosporine-induced folliculodystrophy" (CIF) for this condition. They also introduced a theory based on recent in vitro studies to explain the pathogenic events and established 3 clinical and 4 histopathologic criteria for diagnosing CIF.