Paediatrics·Paediatrics
Flank pain in children
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Flank pain is pain on the side of the body, between the ribs and the hip. In children, it can be a sign of a problem in the kidney, urinary tract, or nearby muscles and bones. It is not a condition itself but a symptom that needs attention.
Key facts
Flank pain is less common in children than in adults, but it is not rare. It can happen at any age.
Flank pain affects both boys and girls. It can happen to children of all ages, from babies to teenagers.
A doctor will ask about your child's symptoms and medical history, and do a physical exam. They may press gently on the belly and back to find where it hurts.
Treatment depends on the cause of the flank pain. Most causes are managed with medicines or simple measures at home. Always follow your child's doctor's advice.
For infections, doctors may prescribe antibiotics. For kidney stones, treatment may include drinking extra fluids or medicine to help pass the stone. For hydronephrosis or other structural problems, doctors may monitor with scans or use a tube called a stent to help urine flow. Pain relief may be offered with over-the-counter medicines, but always ask the doctor or pharmacist first.
After treatment, most children can go back to normal activities. If flank pain keeps coming back, the doctor may recommend regular check-ups to monitor the kidneys and urinary tract.
A balanced diet with plenty of fruits, vegetables, and whole grains can help prevent constipation and some types of kidney stones. Physical activity is important, but avoid heavy contact sports if the child has a known kidney problem.
Not all causes can be prevented, but many can be reduced with healthy habits. Drinking enough water, treating UTIs early, and avoiding constipation can help lower the risk.
There are no vaccines directly for flank pain. However, staying up to date on routine vaccinations helps prevent infections that could lead to kidney problems.
No routine screening for flank pain in children. If your child has had kidney issues before, doctors may do regular urine tests or ultrasounds to check.
With prompt medical care, most children with flank pain recover fully. Even serious causes like a large kidney stone or a kidney infection can be treated successfully. Your child's doctor will help you manage the condition and keep your child healthy.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 16, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.
Most tests are quick and painless. Your child may need to give a urine sample or have blood drawn. The doctor will explain the results and what they mean for treatment.
Surgery is rarely needed for flank pain in children. It may be considered for large kidney stones that do not pass, or for certain urinary blockages that do not improve with other treatments.
Flank pain can be scary for a child and stressful for parents. Feeling worried about the cause or the need for tests is normal. Talk to your child calmly and reassure them. Seek support from your doctor or a child psychologist if needed.