A chronic inflammatory disease of the scalp, primarily perifollicular, leading to suppuration and extensive undermining of the involved area, was given the name Perifolliculitis capitis abscedens et suffodiens by E. Hoffmann. He presented such a case before the Berlin Dermatological society, Nov. 12, 1907. Hokmann's patient, a man aged 25, had then been afflicted for a year, and showed "on the occiput many (about 20) nearly hazelnut sized, pale, hemispherical elevations, hairless or covered at the borders with sparse, short hair stumps, from which on pressure pus exuded and into whose fistulous openings the sound could be introduced up to 4 or 5 cm. Beside these closely crowded tumors with smooth, pale, grayish-red surfaces, which gave the scalp a rough, uneven, mammillated appearance, there were a few disseminated pustules and crusts, pierced by hairs, and isolated, small coin-sized, smooth scars. Healing resulted in further scar formation and was hastened by