Kidney stones (also called renal calculi, nephrolithiasis or urolithiasis) are hard deposits made of minerals and salts that form inside your kidneys. Diet, excess body weight, some medical conditions, and certain supplements and medications are among the many causes of kidney stones.Small kidney stones may pass through the urinary tract on their own, causing little or no pain. Larger stones may get stuck and block the flow of urine, causing severe pain or bleeding

Renal stones, also known as kidney stones, are hard deposits of minerals and salts that form in the kidneys. They can affect any part of the urinary tract, from the kidneys to the bladder. Kidney stones can form when urine becomes concentrated, allowing minerals to crystallize and stick together.