This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables. Lupus Erythematosus. Presented by Dr. F. P. McCarthy. A white man, aged 30, three months previously had been in an automobile accident and had received a "friction burn" on the lower part of the right leg which had not healed and had always shown a slight infiltration. The lesion was circular, about the size of a silver dollar, slightly crusted, pale red and sharply outlined. Biopsy was not performed, but the patient was given gold sodium thiosulphate, which resulted in considerable improvement. This case was presented as a question of trauma as a factor in the production of lupus erythematosus. DISCUSSION Dr. F. P. McCarthy: I presented this case for discussion of the etiology. The patient was changing an automobile tire and a hit-and-run driver struck him; as a result, he lost his right leg and he has a so-called burn-trauma on the left leg that has never healed. Clinically,