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.
Causes of Pyelonephritis. Most often, the bacteria that cause pyelonephritis are the same as those that cause ordinary urinary tract infections. Bacteria found in stool (such as E. coli or klebsiella) are most common.Uncommonly, bacteria from the skin or the environment cause pyelonephritis.ost often, the bacteria that cause pyelonephritis are the same as those that cause ordinary urinary tract infections. Bacteria found in stool (such as E. coli or klebsiella) are most common.