Naevus Anaemicus. Presented by Dr. Carl Laymon, Minneapolis. D. M., a white man aged 24, noted a lesion on the face many years ago. The exact date of onset is unknown. Roentgen therapy in August 1937 proved of no value. The lesion became more noticeable when the face was flushed. The lesion, which is from 1 to 3 cm. wide in different places, is located on the left side of the forehead and face, starting 1 cm. above the hair line and coursing in a linear manner down the left side of the nose and upper lip. There are no changes in the consistency of the skin, no alterations in the color of the hair and no zone of hyperpigmentation. Histologic sections show pigment in the basal cells of the epidermis. DISCUSSION Dr. Carl Laymon, Minneapolis: When I saw this condition, I thought of three possibilities: morphea, vitiligo and naevus