Acne Keloidalis. Presented by Dr. B. L. Schiff, Pawtucket. E. F. E., a 45-year-old white man, states that the cutaneous disorder began about 28 years ago, when acne developed on the back of the neck. This recurred frequently and spread to include both axillae and the scrotum and finally localized chiefly on the buttocks, groins, and upper thighs. Numerous hospitalizations with multiple incisions and drainage has been required throughout the years. Two years ago, because of increasing pain and stiffness about the hips, he was forced to discontinue working. During the years numerous biopsies were done. He has had several tuberculin tests to which the reactions have been negative. In addition to surgery, he has had courses of superficial x-ray therapy, vaccine therapy, and transfusions. When seen by me 18 months ago, he complained of intense pain involving both gluteal regions, with profuse purulent bloody discharge and inability to walk.