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Urgent Care Reviewed Mar 2026

When to Worry About Persistent Diarrhea in Toddlers

Common causes of diarrhea in young children and when to seek medical attention.

Diarrhea is extremely common in toddlers and is usually caused by viral infections that resolve within a few days. However, persistent diarrhea — lasting more than two weeks — warrants medical attention.

Common Causes in Toddlers

Most acute diarrhea is viral (rotavirus, norovirus) and self-limiting. Other common causes include dietary changes, teething-related digestive changes, antibiotic side effects, food sensitivities, and "toddler's diarrhea" — a benign condition caused by excessive fruit juice or fluid intake.

When to Call Your Pediatrician

Contact your provider if your child has diarrhea lasting more than 48 hours, blood or mucus in the stool, signs of dehydration (dry lips, no tears, fewer wet diapers), fever above 102°F, or persistent abdominal pain. Infants under 6 months with diarrhea should always be evaluated promptly.

Home Care Tips

Keep your child hydrated with small, frequent sips of water or an electrolyte solution like Pedialyte. Continue breastfeeding or formula feeding. Avoid sugary drinks and fruit juices. Offer bland, easily digestible foods like bananas, rice, applesauce, and toast once your child is ready to eat.

At American Pediatrics, we evaluate both acute and chronic diarrhea thoroughly, running appropriate tests when needed to identify underlying causes and get your child feeling better.

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