Nephritis

Nephritis is inflammation of any part of the kidneys. It's most commonly caused by an autoimmune condition, but can also be caused by an infection or toxin. The most common causes are:
*A urinary tract infection that reaches the kidneys
*Lupus
*Strenuous exercise
It usually manifests with decreased urine output, blood, and/or protein in the urine, and retention of waste products usually passed in the urine. It's more common in persons of African and Asian descent, and less common in persons of European descent.
Nephritis at Wikipedia
Category:Symptoms