Q: Can gastroenteritis that started with vomiting lead to diarrhea in a 5-year-old child?

Medically reviewed by Sang Hyun Ahn, MD

This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.

Question:

Can gastroenteritis (stomach flu) that started with vomiting lead to diarrhea?

My 5-year-old daughter threw up everything she ate, including water, every 2 hours from the early dawn until the morning. We went to the hospital, and the doctor said it seemed like mild gastroenteritis. She received IV fluids, and her condition improved once we got home. Following the doctor's advice, she fasted for about 2 hours, took oral rehydration solution, and since she didn't vomit anymore, we started feeding her porridge.

Today, she ate well, didn't vomit, and had great energy. She had one soft stool during the day. However, in the evening, a little stool leaked when she pushed to pass gas. Thirty minutes later, she went to the bathroom and had a very loose stool, followed by watery diarrhea.

Should I take her back to the hospital tomorrow? Has her condition gotten worse?

Answer:

You must be very worried. It is a very common progression for gastroenteritis to start with vomiting and then lead to diarrhea.

【Current Situation Evaluation】

Good signs:

• Vomiting has stopped (This is the most important!)

• She is eating well

• Her overall condition and energy are good

• She is able to intake fluids

Typical progression of gastroenteritis:

Vomiting (1-2 days) → Diarrhea (3-7 days) → Recovery

This is a natural process where the intestines are flushing out the virus.

【What to do immediately】

1. Hydration is the top priority

- Give water or electrolyte beverages frequently in small amounts.

- Give about 50-100ml at a time.

2. Diet management

- Continuing to feed her porridge is OK.

- Avoid greasy foods and dairy products.

- You can add bananas and plain toast to her diet.

3. Skin irritation/diaper rash prevention

- Wipe and dry the area completely immediately after she has diarrhea.

- Apply a moisturizer or a soothing ointment.

【Visit the hospital tomorrow if:】

→ She does not urinate for more than 8 hours.

→ Her lips are dry and she produces no tears when crying.

→ She has bloody stools or severe abdominal pain.

→ She starts vomiting again.

→ She develops a high fever.

The current situation looks like a typical course of gastroenteritis. If she is staying well-hydrated, you can continue to observe her at home. You can make a decision about visiting the hospital after checking her condition tomorrow morning!

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.

https://fevercoach.us