Comedo-like follicular papules of hairfollicles, confined to the left side of the upper part of the body, were found in a 22-year-old woman. Histological features were of epidermolytic hyperkeratosis with involvement of the follicular epithelium and the sebaceous duct with compact hyperkeratosis, but almost no interfollicular epidermal alterations were found. Because of the nevoid distribution, the prominent follicular plugging, and epidermolytic hyperkeratosis, we describe this condition as nevoid follicular epidermolytic hyperkeratosis.
Plewig G, Christophers E. Nevoid Follicular Epidermolytic Hyperkeratosis. Arch Dermatol. 1975;111(2):223-226. doi:10.1001/archderm.1975.01630140081010