These muscles are used to help void fecal matter. Also, multiple sclerosis may block the natural increase in activity of the colon following meals. If you're having MS-related urinary problems, it may be tempting to cut back on your fluid intake, but this makes constipation worse. Lack of water may harden the stool, making it more difficult to pass. And increased pressure from the stool on parts of the urinary system may actually increase bladder problems.
Diarrhea is characterized by frequent and loose or watery stools.
It is sometimes the result of allergies or sensitivity to spicy foods or dairy products, contaminated water or food, a change in activity level, or viral, bacterial, and parasitic infections. Among MS patients, diarrhea is less prevalent than constipation but is still a problem. A reduced sensation in the rectal area allows the rectum to stretch beyond its normal range. This triggers an unexpected, involuntary relaxation of the external anal sphincter, releasing loose stool. Diarrhea can be the signal of another problem.