Gastroenteritis in Children

Medically reviewed by Drugs.com. Last updated on May 4, 2025.

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Gastroenteritis, or stomach flu, is an infection of the stomach and intestines. Causes may include bacteria, parasites, or viruses. Rotavirus is one of the most common causes of gastroenteritis in children.

DISCHARGE INSTRUCTIONS:

Call your local emergency number (911 in the US) if:

• Your child has trouble breathing or a very fast pulse.
• Your child has a seizure.
• Your child is very sleepy, or you cannot wake him or her.

Return to the emergency department if:

• You see blood in your child's vomit or diarrhea.
• Your child's legs or arms feel cold or look blue.
• Your child has severe abdominal pain.
• Your child has any of the following signs of dehydration:
  • Dry mouth
  • Few or no tears
  • Eyes that look sunken
  • Soft spot on the top of your child's head looks sunken
  • No urine or wet diapers for 6 hours in an infant
  • No urine for 12 hours in an older child
  • Cool, dry skin
  • Tiredness, dizziness, or irritability

Call your child's doctor if:

• Your child has a fever of 102°F (38.9°C) or higher.
• Your child will not drink.
• Your child continues to vomit or have diarrhea, even after treatment.
• You see worms in your child's diarrhea.
• You have questions or concerns about your child's condition or care.

Drugs used to treat this and similar conditions

Treatment options

The following list of medications are related to or used in the treatment of this condition.

• ondansetron
• Vibramycin
• Doxy 100
• Monodox
• Doryx

View more treatment options

Medicines:

• Medicines may be given to stop vomiting, decrease abdominal cramps, or treat an infection.
• Do not give aspirin to children younger than 18 years. Your child could develop Reye syndrome if he or she has the flu or a fever and takes aspirin. Reye syndrome can cause life-threatening brain and liver damage. Check your child's medicine labels for aspirin or salicylates.
• Give your child's medicine as directed. Contact your child's healthcare provider if you think the medicine is not working as expected. Tell the provider if your child is allergic to any medicine. Keep a current list of the medicines, vitamins, and herbs your child takes. Include the amounts, and when, how, and why they are taken. Bring the list or the medicines in their containers to follow-up visits. Carry your child's medicine list with you in case of an emergency.

Manage your child's symptoms:

Gastroenteritis symptoms may go away without treatment. Medicine is usually not needed to treat gastroenteritis in children. The following will help prevent or treat dehydration:

• Continue to feed your baby formula or breast milk. Be sure to refrigerate breast milk or formula that you do not use right away. Formula or milk that is left at room temperature may make your child more sick. Your baby's healthcare provider may suggest that you give him or her an oral rehydration solution (ORS). An ORS contains water, salts, and sugar that are needed to replace lost body fluids. Ask what kind of ORS to use, how much to give your baby, and where to get it.
• Give your child liquids as directed. Ask the provider how much liquid to give your child each day and which liquids are best for him or her. Your child may need to drink more liquids than usual to prevent dehydration. Have him or her suck on popsicles, ice, or take small sips of liquids often if he or she has trouble keeping liquids down. Your child may need an ORS. Ask what kind of ORS to use, how much to give your child, and where to get it.
• Feed your child bland foods. Offer your child bland foods, such as bananas, apple sauce, soup, rice, bread, or potatoes. Do not give your child dairy products or sugary drinks until he or she feels better. Also do not give your child high-fat or fast foods.
• Help your child rest. Your child should rest as much as possible and get plenty of sleep.

Prevent the spread of gastroenteritis:

Gastroenteritis can spread easily. If your child is sick, keep him or her home from school or daycare. Keep your child, yourself, and your surroundings clean to help prevent the spread of gastroenteritis:

• Wash your and your child's hands often. Use soap and water. Remind your child to wash his or her hands after he or she uses the bathroom, sneezes, or eats.
• Clean surfaces and do laundry often. Wash your child's clothes and towels separately from the rest of the laundry. Clean surfaces in your home with antibacterial cleaner or bleach.
• Clean food thoroughly and cook safely. Wash raw vegetables before you cook. Cook meat, fish, and eggs fully. Do not use the same dishes for raw meat as you do for other foods. Refrigerate any leftover food immediately.
• Be aware when you camp or travel. Give your child only clean water. Do not let your child drink from rivers or lakes unless you purify or boil the water first. When you travel, give your child bottled water and do not add ice. Do not let him or her eat fruit that has not been peeled. Avoid raw fish or meat that is not fully cooked.
• Avoid sharing personal items, food, or drinks. Make sure your child does not share items such as toothbrushes, spoons, or towels. Do not let your child share food or drinks with anyone else.
• Ask about immunizations. You can have your child immunized for rotavirus. This vaccine is given in drops that your child swallows. Ask your healthcare provider for more information.

Follow up with your child's doctor as directed:

Write down your questions so you remember to ask them during your child's visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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