Kidney stones are crystallized material in the urine. These stones form in the kidneys or other parts of the urinary tract. Kidney stones may be made up of a variety of minerals in the blood. The most common are calcium, oxalate or phosphate. Others stones may contain uric acid, struvite, and/or cystine.
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Some of the known causes of kidney stones in children include:
- Too much oxalate in the urine
- Too much calcium in the urine or blood
- Too much uric acid in the urine
- Tiny bacteria a stone can form around
- Inherited abnormality in the way the body handles cystine
- Foreign bodies in the urinary tract, like stents or catheters
- Abnormal function of the urinary tract, such as neurogenic bladder
Last reviewedMarch 2014by Kari Kassir, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.