[Treatment of systemic vasculitides].

The treatment of necrotizing vasculitides may be based on several drugs, depending on the disease itself, its severity, its etiology and the expected prognosis. In practice, the least severe forms, associated with a prognostic score of 0, may be treated with corticosteroids only, while the ones associated with severity factors should be treated with an association of corticosteroids and immunosuppressants. The first-line treatment of viral-associated vasculitides should be based on antiviral drugs. The treatment duration of non-infectious vasculitides is typically 18 to 24 months. The improvement in prognosis is due to the treatment as well as to anti-infectious prophylaxis and careful management of potential complications.