There are many types and causes of head injury, but, by far, the most common are concussions related to motor vehicle accidents and contact sports. Concussion comes from the Latin âConcutereâ, which means to shake violently.
Noun. 1. pyelonephritis-inflammation of the kidney and its pelvis caused by bacterial infection. urinary tract infection-any infection of any of the organs of the urinary tract. acute pyelonephritis-pyelonephritis resulting from the spread of a bladder infection.
The main difference between cystitis and pyelonephritis is that cystitis is an infection of the bladder or urethra, most commonly due to a bacterial etiology whereas pyelonephritis is a complication of it, caused when the damage extends up to the kidney through ureters. This article explains, 1. What is Cystitis.