Symptoms

The signs and symptoms of IBS vary but are usually present for a long time. The most common include:

• Abdominal pain, cramping or bloating that is related to passing a bowel movement
• Changes in appearance of bowel movement
• Changes in how often you are having a bowel movement

Other symptoms that are often related include bloating, increased gas or mucus in the stool.

When to see a doctor

See your doctor if you have a persistent change in bowel habits or other signs or symptoms of IBS. They may indicate a more serious condition, such as colon cancer. More-serious signs and symptoms include:

• Weight loss
• Diarrhea at night
• Rectal bleeding
• Iron deficiency anemia
• Unexplained vomiting
• Difficulty swallowing
• Persistent pain that isn't relieved by passing gas or a bowel movement