Inflammation of a blood vessel, caused by allergic reaction or certain systemic disease.
Inflammation of a blood vessel. Vasculitis can result from an allergic reaction to a drug or foreign substance (allergic vasculitis) or from inflammatory diseases such as rheumatoid arthritis or systemic lupus erythematosus that scar blood vessels and can impair blood flow to a part of the body.
Inflammation of blood vessels. This may damage their lining and cause narrowing or blockage, thus restricting blood flow. This, in turn, may harm or destroy the tissues supplied by the affected blood vessels. Vasculitis is probably caused by small particles called immune complexes, circulating in the blood, that adhere to the vessel walls and provoke inflammation. Normally these complexes are consumed by the white blood cells. Vasculitis is the basic disease process in several disorders such as polyarteritis nodosa, erythema nodosum, temporal arteritis and serum sickness.
Inflammation of the blood vessels, known as vasculitis, typically harms the vessel lining, leading to narrowing or obstruction. This interferes with or halts blood circulation, thereby injuring or causing the decay of tissues nourished by the impacted vessels due to lack of blood supply.
Vasculitis is generally believed to be triggered by the existence of tiny entities known as immune complexes in the bloodstream. These complexes, made up of antigens attached to antibodies, are usually eliminated by white blood cells. However, they can occasionally stick to the walls of blood vessels and instigate inflammation. In certain instances, the triggering antigens may be viruses.
Vasculitis serves as the fundamental pathological mechanism in various medical conditions. These conditions encompass polyarteritis nodosa, erythema nodosum, Henoch–Schönlein purpura, serum sickness, temporal arteritis, and Buerger’s disease.