title: Bilobed thumbnails with erythronychia.
abstract: Onychodystrophy is a common problem and may have multiple causes, both internal and environmental. We present an unusual nail finding in a gentleman without any identifiable etiology. He and several family members had isolated notching of the thumbnails with a characteristic erythematous band.
authors: Section of Dermatology, Department of Medicine, The Medical College of Georgia, Augusta, Georgia 30912, USA.
authors: Tammy K
authors: TK
authors: McLean
authors: Joshua E
authors: JE
authors: Lane
authors: Richard
authors: R
authors: Scher
authors: Jack L
authors: JL
authors: Lesher
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D009260:Nail Diseases; D009264:Nails, Malformed; D013933:Thumb