Vasculites cutanées et cutanéosystémiques

Hypersensitivity vasculitis denomination has been used with various signification since the first description of this entity. Nowadays, it does not correspond to a particular vasculitis, so this term must be abandoned. Contact vasculitis and food-induced vasculitis are rare. It is difficult to prove the responsibility of a drug in a vasculitis, and the detection of antinuclear polynuclear cells antibodies cannot exclude the diagnosis. Giant cell arteritis and Takayasu arteritis concern various aged patients and involve the large artery vessels. Periarteritis nodosa, microscopic polyangiitis, Churg and Strauss syndrome, Wegener granulomatosis are systemic vasculitis well differentiated. The strategy of treatment as become better for these last years. Mixed cryoglobulinemia, often linked to hepatitis C virus infection, are chronicle cutaneous and systemic vasculitis with a particular target on skin, kidney and nervous system. Concerning thromboangiitis obliterans, this entity is located on the edge of vasculitis because e of any impairment of the wall vessel.