Urinary tract infection (UTI) facts. 1  Urinary tract infections (UTIs) are infections of the urethra, bladder, ureters, or the kidneys, which comprise the urinary tract.  E. coli bacteria cause the majority of UTIs, but many other bacteria, fungi, and parasites may also cause UTIs.
Common vasculitis skin lesions are: 1  red or purple dots (petechiae), usually most numerous on the legs. 2  larger spots, about the size of the end of a finger (purpura), some of which look like large bruises. 3  Less common vasculitis lesions are hives, an itchy lumpy rash and painful or tender lumps. Antibodies that react against cells in vessel walls. 2  In some cases of vasculitis, an antibody against the cytoplasm of neutrophils (anti-neutrophil cytoplasm antibodies, or ANCA) is the probable cause of the inflammation and damage.
Vasculitis, which may also be referred to as angiitis and arteritis refers to a large group of diseases involving inflammation of the blood vessels, specifically the walls of the blood vessels-including arteries, veins and capillaries (tiny veins).The plural of vasculitis is vasculitides.n eosinophil is a white blood cell subtype. The third phase is a vasculitis, usually involving the skin, lungs, nerves, kidneys and other organs. There is frequent devastation of the nerves (mononeuritis multiplex) which causes severe tingling, numbness, severe muscle wasting in hands and feet, and shooting pains.