Clinical Gastroenterology | Open Access
Frank H Anderson, Lecheng Zeng, "Seasonal Pattern in the Relapses of Crohn's Disease and Ulcerative Colitis in British Columbia", Canadian Journal of Gastroenterology and Hepatology, vol. 9, Article ID 462964, 5 pages, 1995. https://doi.org/10.1155/1995/462964
Seasonal Pattern in the Relapses of Crohn's Disease and Ulcerative Colitis in British Columbia
Ulcerative colitis (UC) reportedly has a seasonal variation of exacerbations. No seasonal variation of relapses in Crohn's disease (CD) has been reported. A retrospective study of the monthly distribution in the relapses of inflammatory bowel disease (IBD) demonstrated seasonality in both UC and CD. From 1971-93, 226 patients (CD=139, UC=87) with regular follow-ups for at least 13 consecutive months were analyzed. In the study period, 592 relapses occurred in CD patients and 300 in UC patients. The peak relapse seasons were autumn and winter and the lowest was summer, for both CD and UC. The seasonal pattern was independent of sex. These results support the view that seasonal factors may be involved in the relapse of IBD.
Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.