Darier's disease. You mean Hyperkeratosis Follicularis, is also known as Darier's disease. Is a rare genetic disorder. It most commonly affects the chest, neck, back, ears, forehead, and groin. The rash associated with Darier's disease often has a distinct odor. Palms & soles may become thickened, intra oral papules can be found. Also short stature. Finger nails become fragile and this helps to make the diagnosis.