[Necrotizing vasculitis].

We present a boy who had been under observation for 4 years, suffering since the age of nine from necrotizing vasculitis, which appeared during Proteus sp. sepsis. Complex treatment with antibiotics, large doses of steroids, antithrombotic and peripheral circulation improving drugs, as well as local drugs applied to the skin and oral cavity mucosa, resulted in a complete cure. This illness left some cosmetic skin defects on the face and extremities, a shortening of the tongue and malocclusion.