IBS is a common disorder that affects the large intestine. Signs and symptoms include cramping, abdominal pain, bloating, gas, and diarrhea or constipation, or both. IBS is a chronic condition that you’ll need to manage long-term.
The precise cause of IBS is unknow. Factors that appear to plat a role include: muscle contractions in the intestine, abnormalities in the nerves in your digestive system, inflammation in the intestines, severe infection, and changes in bacteria in the gut. Symptoms of IBS can be triggered by food, stress, and hormones.
Irritable Bowel Syndrome, Mayo Clinic (Mar. 17, 2018), https://www.mayoclinic.org/diseases-conditions/irritable-bowel-syndrome/symptoms-causes/syc-20360016