keratosis follicularis

[fə-lĭk′yə-lârĭs]
n.
  1. A hereditary eruptive skin disorder, beginning usually in childhood, in which keratotic papules originating from the hair follicles coalesce to form crusty and warty patches.Darier's disease
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.