K58: Irritable bowel syndrome

K58.3: Irritable bowel syndrome with mixed bowel habits [IBS-M]

Irritable bowel syndrome with mixed bowel habits (IBS-M) is a specific subtype of irritable bowel syndrome (IBS), a long-term, or chronic, disorder affecting the large intestine. People with IBS-M experience irregular and unstable bowel movements. This disorder manifests with symptoms such as abdominal pain, bloating, and discomfort associated with alternating constipation and diarrhea. The exact cause of IBS-M isn't known, but it is thought that a combination of factors, like changes in the gut's microbiota, sensitive nerve endings in the bowel, and stress may play a role. The severity and type of symptoms can vary considerably from person to person and even fluctuate in the same person over time. Some people may have mild symptoms, while others may have severe and disabling symptoms that significantly impact their quality of life.