Leukonychia striata is an uncommon, although fairly well known, condition. It consists' of transverse white striations, appearing at the nail matrix and growing out with the nail. The striae may be narrow or wide. The traumatic cases show narrow striae or wide ones with dentation of the lateral extremities, corresponding to the trauma. The traumatic type was discussed by Heidingsfeld,1 and recently by Netherton.2 Fraser3 presented a case in which trauma was considered causative. Other causes for the condition have been ulcerative colitis,4 arsenical poisoning,5 neuritis, freezing, "trophic" disturbances and endocrine disturbance (appearance during menstruation). Congenital cases are evidently the most uncommon. Heller6 was able to find a report of five cases in the literature. Since then DuBois7 reported the case of a girl, aged 22, presenting the condition on the hands and feet. She had no nervous difficulties. The mother presented the
BECKER SW. LEUKONYCHIA STRIATA: REPORT OF A CONGENITAL CASE. Arch Derm Syphilol. 1930;21(6):957–960. doi:10.1001/archderm.1930.01440120059003
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