Kidney Stones Directory
A kidney stone is a solid substance in the kidney that forms from certain things in urine. Kidney stones vary in size. If a stone leaves the kidney and gets stuck in your urinary tract, you may have severe pain. Follow the links below to find WebMD's comprehensive coverage about how kidney stones develop, what they look like, how to treat them, and much more.
Medical Reference
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What Are Kidney Stones?
Hard, pebble-sized objects that grow in your kidneys are known as kidney stones. Understanding how they form and how they’re treated can help you deal with them -- and maybe even prevent them.
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How Do I Know If I Have a Kidney Stone?
Is that sharp pain in my side and difficulty urinating caused by a kidney stone? A simple imaging test can let you know.
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When Do I Need Surgery for a Kidney Stone?
Kidney stones often clear up on their own. Find out when you need a procedure or surgery to treat a more stubborn stone.
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What Does a Kidney Stone Feel Like?
Kidney stones are small, but they can cause outsized pain. Here’s how to tell if you’ve got one.