|Petechia and purpura on the lower limb due to medication-induced vasculitis.|
|Classification and external resources|
|ICD-10||I77.6, I80, L95, M30-M31|
Vasculitis (plural: vasculitides) is a group of disorders that destroy blood vessels by inflammation. Both arteries and veins are affected. Lymphangitis is sometimes considered a type of vasculitis. Vasculitis is primarily caused by leukocyte migration and resultant damage.