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Kidney Stones

Kidney Stones Symptoms and Causes

Kidney and ureteral stones are made from the waste materials in the urine. They can be as small as a grain of sand or sometimes as large as a golf ball. They can stay in the kidney, or they can move down in the ureter. They cause pain when they block the flow of urine from the kidney into the bladder.

Kidney Stone Symptoms

Kidney Stone Causes
Kidney stones form when there is a decrease in urine volume and/or an excess of stone-forming substances in the urine. The most common type of kidney stone contains calcium in combination with either oxalate or phosphate. Other chemical compounds that can form stones in the urinary tract include uric acid and the amino acid cystine.

