Is my childs stomach pain serious?
Last updated September 3, 2026.
Most kid stomach aches are constipation, gas, a virus, or stress. Serious: pain localizing to the right lower side, steadily worsening pain, pain waking them at night, green or bloody vomiting, blood in stool, a hard swollen belly, or a kid who refuses to move. The appendix pattern is movement-sensitive: right-lower pain plus fever, vomiting, and a still, guarded child means same-day evaluation. Toddler-specific: episodic screaming with legs pulled to the chest can be intussusception, an emergency, and a tender groin lump can be a hernia. Watch-at-home is reasonable for the diffuse, crampy, no-fever kid who still plays between waves and keeps fluids down; give it a few hours and a toilet sit, because the fix is often a bowel movement. The recurrent-mornings pattern (belly-button pain for weeks, worse on school days) deserves a pediatric appointment about functional pain and constipation, not repeated urgent care. Trust the behavior test: a kid playing between cramps is usually fine; a kid lying very still is not.
What to do
- Common culprits: constipation, gas, virus, stress.
- Right-lower pain plus fever and stillness: same-day evaluation.
- Green or bloody vomiting, hard belly: ER.
- Toddler screaming with legs pulled up: emergency.
- Behavior test: playing between cramps is reassuring.
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