Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy - mat24@libero.it. Section of Dermatology, Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy. Unit of Endocrinology, Department of Medicine and Surgery, University of Naples Federico II, Naples, Italy. Department of Health Sciences, University Magna Græcia of Catanzaro, Catanzaro, Italy. Department of Medicine and Health Sciences Vincenzo Tiberio, University of Molise, Campobasso, Italy.