Irritable bowel syndrome, or IBS, is a condition that affects how your digestive system works. People with IBS experience belly pain, changes in bowel habits—like diarrhea or constipation—and other digestive symptoms that come and go over time. IBS is common, but it can be confusing to understand what's happening in your body and why your symptoms change. This section explains what IBS is, how doctors identify it, and what you can expect as you manage the condition.

The articles here answer practical questions you might have: What causes IBS symptoms? How do doctors test for it? What treatments and lifestyle changes might help? You'll also learn the difference between IBS and other digestive conditions, and how to talk with your doctor about your symptoms so you can find an approach that works for you.