Kidney stones are hard deposits of minerals and salts that form in the kidneys. They occur when urine becomes concentrated, allowing crystals to stick together. Common symptoms include severe back or side pain, burning during urination, blood in urine, and nausea. Causes include dehydration, high salt intake, obesity, and certain medical conditions. Small stones may pass naturally with plenty of water, while larger stones may need medical treatment. Drinking enough water and maintaining a healthy diet can help prevent kidney stones.
