Department of Pediatrics, University of California, San Francisco 94115, USA.
Autoerythrocyte sensitization (psychogenic purpura) is an unusual diagnosis, but one that has a characteristic dermatologic manifestation of painful bruising. A typical case is presented, as well as a review of the literature. Treatment consists of psychiatric therapy, which is most effective when initiated early in the disease, so early diagnosis will not only minimize the cost of the medical evaluation but will also benefit the patient.