title: Reversible cutaneous hyperpigmentation and nails with white hair due to vitamin B12 deficiency.
authors.affiliation: Department of Dermatology, Yokohama Rosai Hospital, Yokohama, Kanagawa, Japan. sniiyama@aol.com
authors.forename: Shiro
authors.initials: S
authors.lastname: Niiyama
authors.forename: Hideki
authors.initials: H
authors.lastname: Mukai
mesh_terms: D005260:Female; D006197:Hair / Q000473:pathology; D006801:Humans; D017495:Hyperpigmentation / Q000209:etiology* / Q000473:pathology; D017496:Hypopigmentation / Q000209:etiology* / Q000473:pathology; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology; D009262:Nails / Q000473:pathology; D012867:Skin / Q000473:pathology; D014806:Vitamin B 12 Deficiency / Q000150:complications*