A kidney infection is a painful and unpleasant illness that usually happens when bacteria travel up from your bladder into one or both of your kidneys.
The medical name for a kidney infection is pyelonephritis. It's more serious and different from cystitis, which is a common infection of the bladder that makes urinating painful.
If treated promptly, a kidney infection doesn't cause serious harm but it will make you feel very unwell. If a kidney infection isn't treated, it can get worse and cause permanent kidney damage.
Often the symptoms of a kidney infection come on quickly within a few hours. You can feel feverish, shivery, sick and have a pain in your back or side.
Dialysis is a form of treatment that replicates many of the kidney’s functions.
Dialysis filters your blood to rid your body of harmful waste, extra salt, and water.
It's often used to treat advanced chronic kidney disease (kidney failure), where the kidneys have lost most or all of their ability to function.
Dialysis is an increasingly common type of treatment. In the UK, more than 40,000 people are affected by kidney failure, with more than half this number receiving dialysis.
Most people who need to have dialysis are over 65 years of age.