We are reporting a case of familial spoon nails which involved four generations. Included in this report is a pedigree of familial spoon nails and a classification of koilonychia (spoon nails).
Bergeron JR, Stone OJ. KoilonychiaA Report of Familial Spoon Nails. Arch Dermatol. 1967;95(4):351-353. doi:10.1001/archderm.1967.01600340011002