Inflammatory Bowel Disease.

Last updated Wednesday, December 22, 2004

Incidence and risk factors

Who gets inflammatory bowel disease and why?

Both men and women are affected equally. The arthritis of IBD can appear at any age, but is most common between the ages of 25 and 45.

Joint inflammation begins most often when the colon (the large intestine) is involved in the disease process. In adults, the arthritis is usually most active when the bowel disease is active. Indeed, the amount of bowel disease usually influences the severity of the arthritis. In children, the arthritis is not as often associated with increased bowel disease activity.

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