The main kidney complaints are:
- kidney infections
- kidney stones
- kidney disease
- acute kidney injury
A kidney infection (pyelonephritis) is a painful and unpleasant illness caused by bacteria travelling from your bladder into one or both of your kidneys.
It’s more serious than cystitis, a common infection of the bladder that makes urinating painful.
If treated promptly, a kidney infection doesn’t cause serious harm, but will make you feel very unwell. If a kidney infection isn’t treated, it can get worse and cause permanent kidney damage.