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A case of autoerythrocyte sensitization syndrome is reported. This syndrome most often appears in young women who have an underlying emotional disorder; features include bizarre, tender ecchymotic lesions, which are most commonly located on the arms and legs. Systemic symptoms often accompany the onset of these lesions. A diagnosis of autoerythrocyte sensitization syndrome may be made in a patient who has the typical history and clinical picture of the syndrome and in whom a skin test with use of the patient's blood reveals a positive reaction.

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.