Allergic vasculitis and granulomatosis

Allergic vasculitis and granulomatosis are allergic granulomatosis (AG), also known as allergic granulomatosis or allergic granulomatous vasculitis. It is an autoimmune granulomatous vasculitis characterized by pulmonary and systemic small vessel inflammation, extravascular granuloma, and hypereosinophilia. It is a vascular inflammatory disease characterized by asthma, eosinophilia, and extravascular granuloma formation. The lesions mainly involve the small and medium arteries. As early as 1951, Churg and Strauss named this group of diseases as allergic angiitis and granulomatosis. They believe that allergic factors play an important role in the occurrence of the disease. This disease was identified from PAN for the first time, and it was suggested that this disease could be regarded as the intermediate type of PAN and Wegener's granulomatosis, or the intermediate type of Lüfie's sulfur syndrome and Wegener's granuloma.

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