[The aspects of the problem of systemic vasculitis open to discussion].

Some controversial problems in the diagnosis of systemic vasculitis are discussed. The importance of the morphological studies is assessed. The data are provided on the interrelations between skin and systemic vasculitis, on the existence of the local forms of vasculitis, the presence of the crisscross, mixed and combined forms of vasculitis, and on the possibility of the primary chronic disease course. The data obtained are based on the results of the prolonged observation over 325 patients suffering from systemic vasculitis.