perforating folliculitis

per·fo·rat·ing fol·lic·u·li·tis

erythematous papules with a central keratin plug that are scattered on the arms, thighs, and buttocks; dermal fibers are seen in biopsies extending into the follicle; similar changes are seen especially in diabetic patients on hemodialysis.
See also: hyperkeratosis follicularis et parafollicularis.