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Vomiting With Diarrhea - Allied Physicians Group - Pediatric Medicine
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  • Vomiting With Diarrhea


    • Vomiting and diarrhea that occurs together. (Exception: If vomiting is done, use the Diarrhea guide)
    • Vomiting is the forceful emptying (throwing up) of what is in the stomach
    • It’s normal for nausea (upset stomach) to come before each bout of vomiting
    • Diarrhea means 2 or more watery or very loose stools. (Reason: 1 loose stool can be normal.)


    • Main Cause. Stomach infection from a stomach virus (such as Rotavirus). The illness starts with vomiting. Watery loose stools follow within 12-24 hours.
    • Food Poisoning. This causes rapid vomiting and diarrhea within hours after eating the bad food. Caused by toxins from germs growing in foods left out too long. An example is Staph toxin in egg salad.

    Pain Scale

    • Mild: 1 – 2 times/day
    • Moderate: 3 – 7 times/day
    • Severe: Vomits everything, nearly everything or 8 or more times per day
    • Severity relates even more to how long the vomiting goes on for. At the start of the illness, it’s common for a child to vomit everything. This can last for 3 or 4 hours. Children then often become stable and change to mild vomiting.
    • The main risk of vomiting is dehydration. Dehydration means the body has lost too much fluid.
    • Watery stools with vomiting carry the greatest risk for causing dehydration.
    • The younger the child, the greater the risk for dehydration.

    Diarrhea Scale

    • Mild: 2-5 watery stools per day
    • Moderate: 6-10 watery stools per day
    • Severe: Over 10 watery stools per day
    • The main risk of diarrhea is dehydration.
    • Frequent, watery stools can cause dehydration.
    • Loose or runny stools do not cause dehydration.

    Dehydration: How to Know

    • Dehydration means that the body has lost too much fluid. This can happen with vomiting and/or diarrhea. A weight loss of more than 3% is needed. Mild diarrhea or mild vomiting does not cause this. Neither does a small decrease in fluid intake.
    • Dehydration is the most important complication from diarrhea.
    • These are signs of dehydration:
    • Decreased urine (no urine in more than 8 hours) happens early in dehydration. So does a dark yellow color. If the urine is light straw colored, your child is not dehydrated.
    • Dry tongue and inside of the mouth. Dry lips are not helpful.
    • Dry eyes with decreased or absent tears
    • In babies, a sunken soft spot
    • Slow blood refill test: Longer than 2 seconds. First, press on the thumbnail and make it pale. Then let go. Count the seconds it takes for the nail to turn pink again. Ask your doctor to teach you how to do this test.
    • Fussy, tired out or acting ill. If your child is alert, happy and playful, he or she is not dehydrated.
    • A child with severe dehydration becomes too weak to stand. They can also be very dizzy when trying to stand.

    Return to School:/h3>
    • Your child can return to school after the vomiting and fever are gone.

    When to Call Us for Vomiting With Diarrhea

    Call 911 Now (your child may need an ambulance) If:

    • Can’t wake up
    • Not moving or too weak to stand
    • You think your child is having a life-threatening emergency

    Call Us Now (night or day) If:

    • Your child looks or acts very sick
    • Hard to wake up
    • Acts or talks confused
    • Dehydration suspected. (No urine in over 8 hours, dark urine, very dry mouth and no tears)
    • Blood in the stool
    • Blood in the vomit that’s not from a nosebleed
    • Bile (green color) in the vomit (Exception: Stomach juice which is yellow)
    • Stomach pain when not vomiting. (Exception: Stomach pain or crying just before vomiting is quite common)
    • Appendicitis suspected. (pain low on right side, won’t jump, wants to lie still)
    • Poisoning suspected
    • Age under 12 weeks old with vomiting 2 or more times. (Exception: normal spitting up)
    • Age under 12 months old and vomited Pedialyte 3 or more times
    • Getting Pedialyte (or clear fluids) and vomits all of it for more than 8 hours
    • Weak immune system. (Such as sickle cell disease, HIV, cancer, organ transplant, taking oral steroids)
    • Vomiting a prescription medicine
    • Fever over 104° F (40° C)
    • Age under 12 weeks old with fever. (Caution: Do NOT give your baby any fever medicine before being seen.)
    • You think your child needs to be seen urgently

    Call Us Within 24 Hours (between 9 am and 4 pm) If:

    • You think your child needs to be seen, but not urgently
    • Has vomited for more than 24 hours
    • Fever lasts more than 3 days

    Call Us During Weekday Office Hours If:

    • You have other questions or concerns
    • Vomiting is a frequent problem

    Parent Care at Home If:

    • Mild or moderate vomiting with diarrhea

    Care Advice for Vomiting With Diarrhea

    What You Should Know:

    • Most vomiting is caused by a viral infection of the stomach. Sometimes, mild food poisoning is the cause.
    • Throwing up is the body’s way of protecting the lower intestines.
    • Diarrhea is the body’s way of getting rid of the germs.
    • When vomiting and diarrhea occur together, treat the vomiting. Don’t do anything special for the diarrhea.
    • Here is some care advice that should help.

    For Bottlefed Babies, Offer Oral Rehydration Solution (ORS) for 8 Hours:

    • ORS is a special fluid that can help your child stay hydrated. You can use Pedialyte or the store brand of ORS. It can be bought in food or drug stores.
    • If vomits once, keep on regular formula.
    • For more than once, offer ORS for 8 hours. If you don’t have ORS, use formula.
    • Spoon or syringe feed small amounts. Give 1-2 teaspoons (5-10 ml) every 5 minutes.
    • After 4 hours without throwing up, double the amount.
    • Return to Formula. After 8 hours without throwing up, go back to regular formula.
    • Return to Solid Foods. If over 4 months old and after 8 hours without vomiting, add solids. Start with cereals. Then, slowly add other baby foods.
    • Return to normal diet in 24-48 hours.

    For Breastfed Babies, Reduce the Amount Per Feeding:

    • If vomits once, nurse 1 side every 1 to 2 hours.
    • If more than once, nurse for 5 minutes every 30 to 60 minutes. After 4 hours without throwing up, go back to regular nursing.
    • If continues to vomit, switch to ORS (such as Pedialyte). Do this for 4 hours.
    • Spoon or syringe feed small amounts of ORS. Give 1-2 teaspoons (5-10 ml) every 5 minutes.
    • After 4 hours without throwing up, return to regular feeding at the breast. Start with small feedings of 5 minutes every 30 minutes. As your baby keeps down the smaller amounts, slowly give more.

    For Older Children (over 1 Year Old), Offer Small Amounts of Clear Fluids For 8 Hours:

    • ORS. Vomiting with watery diarrhea needs ORS (such as Pedialyte). If refuses ORS, use half- strength Gatorade.
    • Give small amounts. Use 2-3 teaspoons (10-15 ml) every 5 minutes.
    • After 4 hours without throwing up, increase the amount.
    • After 8 hours without throwing up, go back to regular fluids.
    • Return to Solid Foods. After 8 hours without vomiting, add solid food.
    • Limit solids to bland foods. Starchy foods are easiest to digest.
    • Start with crackers, bread, cereals, rice, mashed potatoes, noodles.
    • Return to normal diet in 24-48 hours.

    Do Not Give Medicines:

    • Stop using any drug that is over-the-counter for 8 hours. Reason: Some of these can make vomiting worse.
    • Fever: Mild fevers don’t need to be treated with any drugs. For higher fevers, you can use an acetaminophen (Tylenol) suppository. This is a form of the drug you put in the rectum. Ask a pharmacist for help finding this product. Do not use ibuprofen. It can upset the stomach.
    • Call your doctor if: Your child vomits a drug ordered by your doctor.

    Return to School:

    • Your child can return to school after the vomiting and fever are gone.

    What to Expect:

    • Moderate vomiting usually stops in 12 to 24 hours.
    • Mild vomiting (1-2 times per day) with diarrhea may last a little longer. It can continue off and on for up to a week.

    Call Your Doctor if:

    • Vomits all clear fluids for more than 8 hours
    • Vomiting lasts more than 24 hours
    • Signs of dehydration occur
    • Diarrhea becomes severe
    • Your child becomes worse

    Disclaimer: This information is not intended be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information.

    Author and Senior Reviewer: Barton D. Schmitt, M.D.
    Copyright 1994-2013 Barton D. Schmitt, M.D.

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