Kidney stones are made of salts and minerals in the urine that stick
together to form small "pebbles." They are usually painless while they remain
in the kidney. But they can cause severe pain when small pieces leave the kidney and travel
through the narrow tubes (ureters) to the bladder.
Symptoms of a kidney stone include severe pain in the flank, which is felt just below the rib cage and above the waist, usually on only one side of the back. The pain may spread to the lower abdomen,
groin, and genital area. Other symptoms include blood in the urine (hematuria),
painful or frequent urination (dysuria), and nausea and vomiting.
Primary Medical Reviewer
E. Gregory Thompson, MD - Internal Medicine
Specialist Medical Reviewer
Tushar J. Vachharajani, MD, FASN, FACP - Nephrology
Current as of
May 2, 2013
WebMD Medical Reference from Healthwise
May 02, 2013
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