Why Parents Worry About the Stomach Flu
When your child starts vomiting or has diarrhea, your biggest concern should be dehydration. Children lose fluids quickly, and keeping them hydrated is the most important thing you can do. Most stomach bugs are viral, self-limiting, and resolve within a few days.
Common Causes
- Norovirus — The most common cause in all ages
- Rotavirus — Less common since the vaccine, but still occurs
- Adenovirus and other enteric viruses
- Bacterial causes — Salmonella, E. coli, Campylobacter (less common)
Symptoms
- Vomiting (often the first symptom)
- Watery diarrhea
- Abdominal cramps
- Low-grade fever
- Decreased appetite
- Body aches and fatigue
Hydration: The #1 Priority
- For vomiting: Wait 15-20 minutes after vomiting, then offer 1-2 teaspoons of fluid every 5 minutes. Gradually increase as tolerated.
- Best fluids: Pedialyte, diluted apple juice, breast milk, or formula
- Avoid: Full-strength fruit juice, soda, sports drinks (too much sugar)
- Popsicles are a great way to get fluids into reluctant drinkers
The BRAT Diet (and Beyond)
Once vomiting has stopped for several hours, offer bland foods:
- Bananas, Rice, Applesauce, Toast
- Crackers, plain pasta, boiled potatoes
- Gradually return to a normal diet within 24-48 hours
When to Call the Pediatrician
- Blood in vomit or stool
- Green (bile) vomiting
- Cannot keep fluids down for 8+ hours
- Signs of dehydration: no tears, dry mouth, no wet diapers for 6+ hours, sunken eyes
- High fever (over 104°F)
- Severe abdominal pain
- Your child is under 3 months old
- Symptoms lasting more than a week
Key Takeaways
- Hydration is the most important treatment — offer small, frequent sips
- Most stomach bugs resolve in 3-7 days
- Don't give anti-diarrhea medication to young children
- Watch for signs of dehydration — this is when it becomes serious
- Good handwashing prevents spread to the rest of the family
