Treatment of brittle fingernails and onychoschizia with biotin: Scanning electron microscopy

Pathologic hoof changes in horses and swine can be normalized by administration of biotin. This vitamin had been given orally to women with brittle fingernails or onychoschizia. The aim of the study was to test whether the favorable clinical results could be corroborated by scanning electron microscopy. We investigated the distal ends of the fingernails from 32 persons. They were placed into three groups: group A consisted of 10 control subjects...