Pityriasis Rubra Pilaris. Presented by Dr. Gerard De Oreo and Dr. Hal E. Freeman. A. R., a white woman aged 45, presented from the Department of Dermatology and Syphilology, Cleveland City Hospital, was well until about three weeks before she entered the hospital, complaining of a dry, red skin. The backs of both hands first became involved, and then the process spread to her arms, scalp, trunk and legs. The skin is dry, erythematous and scaling. Recently her face became involved, showing tension on the lower lids with a suggestion of early ectropion. Examination reveals a well developed and well nourished woman. Her skin is diffusely erythematous and covered with fine scales. The dorsa of the hands, particularly the first and second phalanges, show a dry, acuminate, papular and follicular eruption. Most of the papules are discrete, but in some areas they are confluent, forming plaques. Many of the papules