[Epidemiology of sarcoidosis and its genetic and environmental risk factors]
1Service de médecine interne II, CHU de la Pitié-Salpétrière, 47-83, boulevard de l'Hôpital, 75651 Paris cedex 13, France. catherine.chapelon@psl.ap-hop-paris.fr
Purpose:
Review of the literature on epidemiologic data of sarcoidosis and risk factors.
Current Knowledge And Key Points:
Epidemiological data show that sarcoidosis is a world-wide disease. Frequency is influenced by multiple predisposition factors. The most important are racial factor, sex, age, familial aggregation, genetic factor and/or infective agent. One of these is insufficiency.
Future Prospects And Projects:
Patent sarcoidosis is revealed when concomitant environmental factors (infective agent, climate, country) and predisposition ones (race, sex familial aggregation) appear together and inducing, in each patient, a particular sarcoidosis.
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