What Are the Causes of Chronic Nausea & Diarrhea?

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Chronic nausea and diarrhoea may be symptoms of serious digestive diseases. Consult a physician about ongoing diarrhoea and nausea. Medical tests can be performed to determine if an underlying disease is present.

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According to the Mayo Clinic, chronic diarrhoea is defined as diarrhoea that lasts more than four weeks. Diarrhoea is often accompanied by nausea, bloating, stomach cramps and stomach pain.


Normally, digested food passes through the colon where most fluids are absorbed. Diarrhoea occurs when either the waste passes through too quickly or when the colon is unable to properly absorb fluids because of inflammation due to disease.


Chronic diarrhoea can occur as the result of lactose intolerance, irritable bowel syndrome, inflammatory bowel disease, coeliac disease, Crohn's disease or ulcerative colitis. Chronic diarrhoea sometimes occurs after gallbladder surgery or other abdominal surgeries.


If you are experiencing chronic diarrhoea, it is important to drink lots of fluid to prevent dehydration. Drinking an electrolyte drink such as a sports drink may be recommenced. Try eliminating dairy products to determine if the diarrhoea is related to lactose intolerance.


Chronic diarrhoea can lead to dehydration, which can be life-threatening. A doctor should be consulted if dehydration is suspected or if blood appears in the stools.

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