Burning diarrhea can be caused by enzymes and acids breaking down food in the stomach and small intestine, or by spicy foods. Diarrhea speeds up digestion, and enzymes and acid can irritate the rectum. Rehydration and certain foods can relieve symptoms, but persistent symptoms should be checked by a doctor.
Burning diarrhea can usually be traced to one of two causes. In most cases, heartburn comes from enzymes and acids that break down food in the stomach and small intestine. Spicy and spicy foods can also cause burning diarrhea.
During normal digestion, food is broken down by acid and enzymes in the stomach. This breakdown continues as food passes into the small intestine, where nutrients and liquids are absorbed. By the time food passes through the large intestine, the enzymes and acids have been neutralized and all useful material has been withdrawn from the food, leaving only a dense lump of waste material, which passes out of the body as a bowel movement. Depending on the food eaten, digestion could take 12 to 24 hours.
Diarrhea speeds up this process, speeding food through the digestive tract. The intestines don’t have enough time to extract nutrients or water before they pass out of the body, usually with great urgency. The result is a watery or thick bowel movement.
Enzymes and acid are introduced into the food in the stomach, where they begin to break down the food into a useful form, but do not have time to complete the task. These substances are still active when the bowel movement passes and can irritate the rectum. Burning diarrhea is often caused by these digestive enzymes and stomach acid.
In some cases, spicy food could be responsible for burning diarrhea. Capsaicin, the active chemical found in most spicy foods, works by linking pain and warm sensations in the mouth. It can also irritate the digestive tract, triggering a bout of diarrhea. Capsaicin, when precipitated through the body, does not have time to break down and remains intact. When passed on during a bowel movement, it causes the same sensation of heat and pain, which feels like burning diarrhea.
A bout of burning diarrhea could have a number of causes. Food poisoning bacterial infection is perhaps the most common, but viral infection, reaction to food or medication, and some intestinal disorders, such as irritable bowel syndrome, could also be responsible. In most cases, diarrhea is not a serous condition and can be easily treated at home.
Over-the-counter medications are available that can stop these symptoms, but in many cases, patients are better off letting the diarrhea run its course. Often, diarrhea is the body’s attempt to rid itself of some irritant and prevent removal from prolonging the condition. Medications should be a weapon of last resort unless directed by a doctor.
Instead, patients are advised to rehydrate with caffeine-free beverages to replace lost fluids. Foods such as toast, yogurt, rice, and bananas are recommended to relieve symptoms. In cases where symptoms persist or if accompanied by other symptoms, such as fever, bloody or black stools or other worrying conditions, it is advisable to consult a doctor.
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