When you have diarrhea
Diarrhea is the passage of loose or watery stool. For some, diarrhea is mild and will go away within a few days. For others, it may last longer. It can make you lose too much fluid (dehydrated) and feel weak. It can also lead to unhealthy weight loss.
A stomach or intestinal illness is a common cause of diarrhea. Medical treatments, such as antibiotics and some cancer treatments can also cause diarrhea. Many other medicines can also cause diarrhea.
Stomach or intestinal illness
Viral gastroenteritis is an infection of the stomach and intestine caused by a virus. The infection can lead to diarrhea and vomiting. It is someti...

Diarrhea - Animation
Diarrhea isn't something most people want to talk about, much less have. Not only can diarrhea be uncomfortable, with gas, bloating, and that mad dash to the toilet, but it's a sign that you're either sick, or you've eaten something that really didn't agree with you. With diarrhea, the stools become loose and watery instead of solid. If you have diarrhea, there's a good chance you picked up a stomach virus. Or, you may have gotten food poisoning from eating food or drinking water that was contaminated with bacteria. A lot of people get sick from tainted food while traveling, because they're not used to the food and water in the foreign country. This is called traveler's diarrhea. Certain diseases that affect your intestines can cause diarrhea, including celiac disease, irritable bowel syndrome, Crohn's disease, and ulcerative colitis. If you've taken medications such as antibiotics or laxatives, diarrhea can be an unpleasant side effect. Protect your stomach by giving it healthy bacteria called probiotics. You can find them in yogurt and supplements. Among other things, probiotics help crowd out the bad bacteria that cause diarrhea. To avoid getting sick, wash your hands or use an alcohol-based hand sanitizer so bacteria can't get into your body. And when you travel to areas that may have unclean water, drink only bottled water without ice. Also avoid eating any uncooked fruits or vegetables that don't have a peel. Usually diarrhea goes away by itself pretty quickly, but it can stick around for a few days or even weeks. Loose stools are very watery, and they can dehydrate you pretty quickly. Stay hydrated by drinking at least 8 to 10 glasses of clear liquids a day. Drink one glass every time you have a loose bowel movement. To replace the electrolytes you're also losing with diarrhea, consider an electrolyte drink or rehydration solution. Also you may want to eat soup, pretzels, and other salty foods, as well as bananas and other high-potassium foods. Infants and children are especially likely to get dehydrated from diarrhea, and this can be really dangerous. You can tell your baby is dehydrated because his mouth will be dry, he'll make fewer wet diapers, and he won't produce tears when he cries. To keep your child hydrated, give 2 tablespoons of fluid every 30 to 60 minutes. You can use breast milk, formula, broth, or a solution like B.R.A.T. or Pedialyte, which also comes in a kid-friendly popsicle form. Diarrhea is an unpleasant, but fortunately short-term affliction most of the time. If it does stick around, call your doctor. The doctor will ask questions about your symptoms, where you've been traveling, and what new medicines you've taken or foods you've eaten. Until you're feeling better, drink plenty of fluids so you don't get dehydrated.
How to Relieve Diarrhea
These things may help you feel better if you have diarrhea:
- Drink 8 to 10 glasses of clear fluids every day. Water is best.
- Drink at least 1 cup (240 milliliters) of liquid every time you have a loose bowel movement.
- Eat small meals throughout the day, instead of 3 larger meals.
- Eat some salty foods, such as pretzels, soup, and sports drinks.
- Eat some high potassium foods, such as bananas, potatoes, and fruit juices.
Ask your health care provider if you should take a multivitamin or drink sports drinks to boost your nutrition. Also ask about taking a fiber supplement, such as Metamucil, to add bulk to your stools.
Your provider may also recommend a medicine to slow down your diarrhea. Take this medicine as you have been told to take it.
Eating When you Have Diarrhea
You can bake or broil beef, pork, chicken, fish, or turkey. Cooked eggs are also OK. Use low-fat milk, cheese, or yogurt.
If you have very severe diarrhea, you may need to stop eating or drinking dairy products for a few days.
Eat bread products made from refined, white flour. Pasta, white rice, and cereals such as cream of wheat, farina, oatmeal, and cornflakes are OK. You may also try pancakes and waffles made with white flour, and cornbread. But don't add too much honey or syrup.
You should eat vegetables, including carrots, green beans, mushrooms, beets, asparagus tips, acorn squash, and peeled zucchini. Cook them first. Baked potatoes are OK. In general, removing seeds and skins is best.
You can include desserts and snacks such as fruit-flavored gelatin, fruit-flavored ice pops, cakes, cookies, or sherbet.
Things you Should Avoid Eating or Drinking
You should avoid certain kinds of foods when you have diarrhea, including fried foods and greasy foods.
Avoid fruits and vegetables that can cause gas, such as broccoli, peppers, beans, peas, berries, prunes, chickpeas, green leafy vegetables, and corn.
Avoid caffeine, alcohol, and carbonated drinks.
Limit or cut out milk and other dairy products if they are making your diarrhea worse or causing gas and bloating.
When to Call the Doctor
Contact your provider if you have:
- The diarrhea gets worse or does not get better in 2 days for an infant or child, or 5 days for adults
- Stools with an unusual odor or color
- Nausea or vomiting
- Blood or mucus in your stool
- A fever that does not go away
- Stomach pain
Reviewed By
Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
Bartelt LA, Guerrant RL. Diarrhea with little or no fever. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 98.
Schiller LR, Sellin JH. Diarrhea. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 11th ed. Philadelphia, PA: Elsevier; 2021:chap 16.