What causes nausea in IBS?
Finding the exact cause and treating nausea in IBS isn’t easy because any upset in any part of the digestive system can result in nausea. IBS is a functional disorder of the digestive system meaning that the process of digestion doesn’t work as well as it should and there is no single identifiable cause or reason for the symptoms. On saying that, there are some indications as to why nausea might occur. Some people develop symptoms of irritable bowel syndrome after an intestinal infection such as gastroenteritis of which nausea and vomiting are symptoms. Even after the infection has cleared up it might be that the balance of bacteria in the gut has been upset and nausea can still persist. Sometimes nausea eases off after a bowel movement, particularly if constipation is a predominant feature of IBS as delayed evacuation can make some people feel nauseous. Certain foods and drinks can cause nausea in some individuals who are sensitive or allergic to these foods or who cannot tolerate the
