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狼疮

ID: ANH13101chis
医疗动画文字记录:狼疮是一种免疫系统攻击自身组织的疾病。免疫系统是由白细胞组成的,白细胞可以保护身体免受外来入侵者的攻击。通常情况下,当病毒和细菌等外来入侵者进入身体时,一些白细胞会将它们识别为外来物,因为它们含有一种叫做抗原的物质。这种识别会导致一些白细胞产生针对这种化学标记物的抗体。这些抗体附着在抗原上,将外来入侵者标记为免疫系统消灭的目标。在红斑狼疮等自身免疫性疾病中,白细胞错误地产生抗体来标记自己的一些身体细胞,并循环化学物质进行破坏。当抗体附着在正常细胞上时,白细胞开始攻击它们,就像它们是外来抗原一样。随着时间的推移,这种自身免疫反应会在发生攻击的身体部位引发炎症。炎症使受影响部位的血管扩张并渗漏液体,引起红肿。当免疫系统开始攻击身体的不同部位时,就会发生狼疮的症状。可能会在脸颊和鼻子上长出蝴蝶状的皮疹。鼻子或口腔内可能会形成小溃疡或溃疡。你可能会患上关节炎,发生关节发炎肿胀。当手指遇冷的时候,它们可能会变成蓝色或白色。这被称为雷诺现象。在深呼吸时,你可能会因为胸膜炎而感到疼痛,这是一种肺部外层发炎的情况。白细胞可能会产生抗体,附着在受损细胞的DNA上。附着物称为免疫复合物,可以滞留在肾脏并引起炎症,称为狼疮肾炎。你的任何症状,甚至那些与皮肤无关的症状,都可能是由一种被称为光敏性的对阳光不寻常反应引起的。红斑狼疮的其他常见症状包括极度疲乏、头痛、发热、血液中红细胞数量减少(称为贫血),腿、脚、手或眼周皮肤肿胀,肌肉疼痛和无力,以及脱发。狼疮有时被称为伟大的模仿者,因为它的许多症状也能在其他健康问题中发现。目前还没有治愈红斑狼疮的方法,但是你可以通过避免阳光直射和在户外涂抹防晒霜来预防或减少红斑狼疮的爆发。防晒霜的防晒系数应该在55或更高,并且可以阻挡紫外线A和紫外线B的辐射。为了治疗你的症状,医生可能会建议使用一些药物来减轻炎症,比如非甾体抗炎药(NSAIDS)和抗疟疾药。医生也可能会推荐抑制或阻止免疫系统攻击自身组织的药物,如皮质类固醇。

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