Diarrhoea may be caused by a temporary problem, like an infection, or a chronic problem, like an intestinal disease. A few of the more common causes of diarrhoea are
Bacterial infections. Several types of bacteria, consumed through contaminated food or water, can cause diarrhoea. Common culprits include Campylobacter, Salmonella, Shigella, and Escherichia coli.
Viral infections. Many viruses cause diarrhoea, including rotavirus, Norwalk virus, cytomegalovirus, herpes simplex virus, and viral hepatitis.
Food intolerances. Some people are unable to digest some component of food, such as lactose, the sugar found in milk.
Parasites. Parasites can enter the body through food or water and settle in the digestive system. Parasites that cause diarrhoea include Giardia lamblia, Entamoeba histolytica, and Cryptosporidium.
Reaction to medicines, such as antibiotics, blood pressure medications, and antacids containing magnesium.
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