Kidney stones may form if the amount of calcium, uric acid, oxalate or cystine builds up in excessive quantities in the body. Quite often these stones are as small as a grain of sand, so they pass out of the body in the urine without any symptoms appearing. Kidney stones also sometimes grow to be much larger. They can reach the size of pebbles, or in the most extreme cases, they reach the size of a golf ball. When this happens, they become stuck in the body with people experiencing terrible pain. Oversized kidney stones require medical intervention to remove the blockage.
The tremendous pain that substantial kidney stones cause is, without a doubt, the best known of all signs of this illness. The medical term for these pains is renal colic. The positions where the stone is stuck in the body determines where the pains are felt most strongly. It's common to feel these pains in one or both of the sides of the lower back, but if the stone is lower down the pain is at its most intense in the groin. Sometimes the pain starts in the back and moves around to the stomach. The discomfort may also come in extremely severe spasms or as a continuous, throbbing pain. The individual might find it impossible to sleep as the pain continues for most of the day.
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