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血管炎是指原发于血管壁的炎症。引起血管炎的原因很多,包括感染、变态反应、理化因素等。变应性血管炎由变态反应引起。主要侵犯细小血管,包括小静脉、毛细血管和细动脉,最常侵犯皮肤,其次为关节、肾、肺、脾、胃肠道等内脏器官。呈急性、亚急性或慢性经过。过去许多学者曾用不同名称进行描述,如Gougerot三联症,结节性真皮过敏疹,变应性细动脉炎,超敏性血管炎,坏死性结节性皮炎,白细胞碎裂性血管炎,系统性变应性血管炎等。实际上为同一疾病。
Vasculitis is the inflammation of the blood vessel wall. Cause vasculitis for many reasons, including infection, allergies, physical and chemical factors. Allergic vasculitis is caused by allergies. The main violations of small blood vessels, including small veins, capillaries and arterioles, the most common violations of the skin, followed by joints, kidneys, lungs, spleen, gastrointestinal tract and other internal organs. Was acute, subacute or chronic. Many scholars in the past have used different names to describe, such as Gougerot triad, nodular dermatitis, atopic arteritis, hypersensitivity vasculitis, necrotizing nodular dermatitis, leukocytoclastic vasculitis, system Sexual allergic vasculitis. In fact, the same disease.