Hypersensitivity vasculitis is a type of vasculitis. Vasculitis means ‘inflammation (swelling) of blood vessels’ in which blood vessels become thicken, scarring and weaken.
Hypersensitivity vasculitis (HSV) is an acute form of vasculitis mainly the inflammation of small blood vessels. It is also known as ‘hypersensitivity angiitis’ or ‘allergic vasculitis’. It usually affects the skin (cutaneous disease) or it may be a cutaneous manifestation of other systemic disease. The organs affected in systemic disease include; joints, kidneys and gastrointestinal tract.
It is more common in adults but affects both male and female equally. HSV lasts for two to three weeks or even more months or years.