Bladder Stones

Bladder stones are hardened mineral clumps that form in your urinary bladder (the organ that holds your urine). They usually form when some urine (pee) stays in your bladder after you use the restroom.

You may not notice small bladder stones. They may leave your body when you pee without any symptoms. Larger bladder stones may be so painful that you may feel sick to your stomach, aren’t able to pee and have other symptoms, such as bloody urine. Go to the nearest emergency room (ER) if you have bladder stone signs, including severe pain, difficulty peeing and other worsening symptoms.

Another name for bladder stones is bladder calculi.

How common are bladder stones?

Only about 5% of all stones that can develop in your urinary system are bladder stones.