Urinary bladder stone
Bladder stones are hard masses of minerals in your bladder. They develop when the minerals in concentrated urine crystallize and form stones. This often happens when you have trouble completely emptying your bladder.
Symptoms
Sometimes bladder stones — even large ones — cause no problems. But if a stone irritates the bladder wall or blocks the flow of urine, signs and symptoms may include:
- Dark-colored urine
- Lower abdominal pain
- Pain during urination
- Frequent urination
- Difficulty urinating
- Interrupted urine flow
- Blood in the urine