The patient whose case history appears herein presented a generalized eruption of such extraordinary character that it was deemed worthy of report. A negress, aged 23, presented a diffuse generalized papular, squamous, nodular eruption (Figs. 1 and 2). The lesions were psoriasiform and infiltrated; some were annular, and others followed the natural line of cleavage of the skin. In the course of twenty-one months, almost all of the lesions involuted, with scar formation, some with prior ulceration. The scars were soft and pliable, resembling the scars of syphilids (Figs. 5 and 6). There were constitutional and objective symptoms of an infection, the nature of which was undetermined. Histologically, the picture was that of a granuloma (Fig. 3). Laboratory and animal inoculation studies were negative. No definite clinical diagnosis was made. Indeed, the diagnosis of the eruption was puzzling to all of the dermatologists1who observed the patient during her