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.
an inflammation of the renal pelvis, often accompanied by symptoms such as pain and tenderness in the loins, irritability of the bladder, bloody or purulent urine, and a peculiar pain on flexion of the thigh. See also pyelonephritis.yelitis is usually caused by a microorganism such as Escherichia coli or (less often) streptococci or staphylococci, which may invade the kidneys by way of the blood.