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.
Symptoms of this condition may include:
Passing more urine than usual
Unusually tired
Pain when passing urine
High temperature
Lower back pain
Our Health A-Z contains more information on Pyelonephritis.
Important: If you have these symptoms, they may be unrelated to any of these conditions listed. If you are concerned about your symptoms then you should see a doctor.
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