Kidney infections in men are caused by bacteria entering through the urethra and traveling up through the ureters, bladder and into the kidneys. Infections in the kidneys reduce the body's ability to process and filter waste and if left untreated can cause severe kidney damage. The symptoms of kidney infections in men begin with urinary problems and may spread to other parts of the body without treatment.
According to the Mayo Clinic, kidney infections in men may cause a frequent need to urinate that is persistent even after urination, especially at night.
Pain or a burning sensation during or just following urination is a symptom of kidney infections in men.
Inflammation and pressure from swelling and fluid build up in and around the kidney can cause abdominal pain and distension.
Pain in the groin, buttocks and back may result from kidney infections that spread to the bladder and ureters in men.
Kidney infections are caused by bacteria that enter through the urethra, and the body's response to the bacteria may include a high fever and night sweats.
Blood (hematuria) or pus from infections in the kidneys may pass into the urine, which is a symptom of a severe kidney infection and requires prompt treatment.
Severe kidney infections that are left untreated may cause nausea and vomiting and result in fatigue and dehydration.