How Common is IBS? IBS is a very common disorder and scientific tests show that about 10% to 15% of people in the United States have it. IBS is more common in women with almost twice as many women having it than men.
Symptoms: Constipation; Abdominal pain; Diarrhea.

Answer – Nausea is a common symptom reported by patients with irritable bowel syndrome (IBS). In one of our studies conducted at UCLA, we found that about 4 out of 10 women (38%) with IBS and nearly 3 out of 10 men (27%) with IBS report nausea. Nausea may be due to several causes.