[Self-induced dermatosis on the shoulder]

Self-induced dermatoses are more and more frequent in adolescent substance abusers with adaptation problems. We here report a case of self-induced bullous lesions on the shoulder in an adolescent with major depression and suicidal ideations. The study involved a 22-year old man, who was a chronic smoker, an occasional user of cannabis and alchool with no particular past medical history, with divorced parents, in conflict with his father. He presented with bullous eruption on the left shoulder made of bubbles, post-bullous skin erosions and scabs on a healthy skin. The monomorphic appearance of lesions, their accessibility (on the left shoulder in a right-handed patient), patient's history and his psychiatric problems have immediately suggested the investigation of self-induced dermatosis or factitious disorder. The patient admitted that he had taken psychotropic drugs and that the self-induced lesions had been caused by cigarette burns. This first psichologic evaluation also showed that the patient had suicidal ideations and a self-and hetero-aggressive behavior. The patient was treated with emollients and healing creams and referred to the Department of Psychiatry for complementary therapies.