[Psychogenic purpura].

A 27 year old women revealed chronic relapsing, spontaneously developing hematomas without coagulopathy. The lesions were reproducible by intradermal injection of erythrocyte membranes as well as DNA. Positive test reactions could be elicited or suppressed by psychological influences on the patient. This case and similar reports in the literature raise the question whether Gardner-Diamond syndrome and the autosensitization to DNA are different entities.