Pachyonychia congenita: a case report.
D002145:Callosities / Q000151:congenital*; D002648:Child; D005534:Foot Diseases / Q000151:congenital; D006229:Hand Dermatoses / Q000151:congenital; D006801:Humans; D008297:Male; D009264:Nails, Malformed / Q000151:congenital*