Or133 Brittle Nails And Hypothyroidism: Myth Or Reality?

Conference: 
Author(s): 
frances pierre1, RICARD LEILA2 e THIBERT JEAN-BAPTISTE3
1Banyuls sur Mer; 2MONTPELLIER; 3SALSES LE CHATEAU
Text: 
More than 20% of people suffer from brittle nails (70% of them are women). Due to this important number in our offices, we decided to describe with details the causes responsible for brittle nails, but also to link that disorder with a thyroid deficiency.
Objective: We made a description of a population we saw in a rural GP’s office. 1547 patients were seen in a period of 2 months; 200 of them suffered from brittle nails. This study permits to appreciate some of the reasons of that weakness, and permits to describe nail plates disorders.
Method: It is a prospective and observational study of 200 persons in a rural area (Banyuls sur Mer, a city of 5.000 inhabitants). We divided the patients into two group: G1 brittle nails due to hypothyroidism, G2 brittle nails due to another cause.
Results: At first we made a description of the causes of brittle nails. Exogenous causes represent 39.5% of the cases of brittle nails, where as hypothyroidism represents 38.5% of the causes. People in G1 are older than G2 (80.5% in G1 are over 60, 69% in G2). Mainly women suffer from brittle nails (80.5% in G1, and 71.5% in G2). Nail plate disorders are different in the 2 groups. We noticed a general weakness of all the part of the nail plate in G1, where as in G2 we pointed out onychoschizia as the main cause (43.5%) of brittle nail disorder. To continue with hypothyroidism, we discovered 15 cases (19.4%) of unknown hypothyroidism (however patients had clinical disorders), 43 (56%) cases knew their disease, but hypothyroidism treatment was not efficient, 19 (24.6%) suffered from hypothyroidism and their hormonal control was perfect. Then we had 77 cases; 49 of them (64%) had an immune disorder (Ac anti-thyroid positive).
Conclusion: This study permits to emphasize the importance of hypothyroidism in a population with brittle nails (38.5% of our patients suffered from hypothyroidism). Moreover, this number is under-estimated because it is an observational study; we did not report subclinical cases of hypothyroidism. This study is important because it will permit to improve the image of GPs: 28% of the patients we have seen consider GPs are not efficient to understand and cure brittle nails.
Literature: 
OR133 BRITTLE NAILS AND HYPOTHYROIDISM: MYTH OR REALITY?
Keywords: 
hypothyroidism, brittle nails, onychoschizia