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Very small kidney stones are unlikely to cause many symptoms. They may even go undetected and pass out painlessly when you pee.

Larger kidney stones can cause symptoms, including:

• pain in the side of your tummy (abdomen) or groin – men may have pain in their testicles
• a high temperature
• feeling sweaty
• severe pain that comes and goes
• feeling sick or vomiting
• blood in your urine
• urine infection

A kidney stone that blocks the ureter, the tube that connects your kidney to your bladder, can cause a kidney infection.

This is because waste products are unable to pass the blockage, which may cause a build-up of bacteria.

The symptoms of a kidney infection are similar to symptoms of kidney stones, but may also include:

• a high temperature
• chills and shivering
• feeling very weak or tired
• cloudy and bad-smelling urine

Find out more about kidney infections