Is There a Seasonal Clustering of Onset of Acute Sarcoidosis in Ankara?

The etiology of sarcoidosis is not yet known and there are various surveys reported on this issue. Some of this surveys are on the sea­sonal clustering of the onset, which may be related to the etiol­ogy-Files of 50 patients who were diagnosed sarcoidosis between January 1980 and September 1998 were retrospectively investi­gated. The ones having erythema nodosum and arthralgia were thought to have acute sarcoidosis and accepted as group I (n=14) and the other as group II (n=36). The onset season of sarcoidosis was spring and summer in 10 (71.4%) patients in As a result, determination of the onset or the diagnosis time in sarcoidosis whether acute or not, is significantly more common in spring and summer which may show that the etiology of sar­coidosis may be related to exposure to some environmental fac­tors.