title: JAAD Grand rounds quiz. Patch of "difficult to comb" hair.
authors: Kim
authors: K
authors: Quach
authors: Jeffrey
authors: J
authors: Miller
mesh_terms: D000293:Adolescent; D001707:Biopsy, Needle; D003937:Diagnosis, Differential; D005260:Female; D006197:Hair / Q000002:abnormalities; D006201:Hair Diseases / Q000175:diagnosis*; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D009506:Nevus / Q000175:diagnosis*; D035583:Rare Diseases; D012536:Scalp Dermatoses / Q000175:diagnosis* / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis*; D056164:Teaching Rounds