It's normal to have diarrhea or constipation from time to time. But if these problems happen often and occur with symptoms such as stomach pain or discomfort, you should see a doctor about the possibility of having irritable bowel syndrome (or IBS).
A doctor who suspects IBS may ask about your symptoms, review your medical history, take a physical exam, and perform tests.
For someone with irritable bowel syndrome with diarrhea, or IBS, the sudden urge to go to the bathroom can be uncomfortable and embarrassing; it's enough to make a person shun certain foods and situations.
The good news is that there are often dietary changes people with IBS can make to ease the rage of the runs. And you needn't completely give up any foods.
"Moderation is important," says Leslie Bonci, MPH, RD, author of the American Dietetic Association (ADA) Guide to Better Digestion. It's important...
No matter how embarrassing, it is important to talk with your doctor openly and honestly about your symptoms. You'll need to tell your doctor about stomachaches, bloating, and any change in the appearance and frequency of bowel movements.
Mention if you've had nausea, vomiting, fever, persistent pain, blood in the stool, or weight loss. These particular symptoms are NOT signs of IBS and may indicate other illnesses.
During the medical history review and physical checkup, your doctor will likely try to rule out the presence of other illnesses such as inflammatory bowel disease (IBD), colon cancer, or celiac disease.
Diarrhea, abdominal bloating, and constipation can be particularly misleading symptoms, since they are signs of various ailments. Plus, the physical exam may point to other disorders. For instance, weight loss, ulcers, and arthritis may point to inflammatory bowel disease instead of IBS.
To further exclude other illnesses, doctors may order blood and stool tests. They may ask for a breath test or ask you to temporarily eliminate dairy products from your diet to determine whether you're lactose intolerant.
They may also conduct a flexible sigmoidoscopy, in which a flexible, finger-sized tube with a camera is placed inside the rectum to examine the lower part of the colon.
The entire colon and the rectum may also be analyzed with a colonoscopy, a long flexible, finger-sized tube with a camera placed inside the rectum.
IBS Diagnostic Criteria
Not all doctors agree that the best way to diagnose IBS is through the exclusion of other diseases. Some researchers suggest a more "positive approach" using guidelines called the Rome III criteria.