Kidney infection is also called pyelonephritis.
It is a type of urinary tract infection (UTI) that generally begins in your urethra or bladder and travels to one or both of your kidneys.
A kidney infection requires prompt medical attention. If not treated properly, a kidney infection can permanently damage your kidneys or the bacteria can spread to your bloodstream and cause a life-threatening infection.
Diagnosis
To confirm that you have a kidney infection, you'll likely be asked to provide a urine sample to test for bacteria, blood or pus in your urine. Your doctor might also take a blood sample for a culture — a lab test that checks for bacteria or other organisms in your blood.
Other tests might include an ultrasound, CT scan or a type of X-ray.
Treatment
Antibiotics are the first line of treatment for kidney infections. The duration of the course of treatment is individual and depends on the severity of the disease.
Usually, the signs and symptoms of a kidney infection begin to clear up within a few days of treatment.
Your doctor might recommend a repeat urine culture to ensure the infection has cleared. If the infection is still present, you'll need to take another course of antibiotics.
Treatment might include antibiotics and fluids that you receive through a vein in your arm (intravenously).
Source:
https://www.mayoclinic.org/diseases-conditions/kidney-infection/diagnosis-
treatment/drc-20353393
