Have you ever heard of glomerulonephritis (GN)? It is an irritation of the glomeruli. Those are fields of the kidneys composed of the very small blood vessels. These elements are responsible for cleaning blood from the waste material and replacing extra water. The times when these important blood vessels get injured, people notice their kidneys to start working improperly. It may result in the failure of this organ. Nephritis is another name for this disorder, and it requires quick medical treatment.