Prostatitis is a general term that refers to inflammation (swelling) of the prostate gland, which is sometimes caused by an infection.
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.
Our Health A-Z contains more information on the above symptoms.
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.