其实早在2022年3月，美国《传染病开放论坛》就有研究显示，和没有感染新冠病毒的人相比，感染过新冠病毒的人，再感染带状疱疹的风险高15%，如果因新冠住过院，这一风险还会上升到21%。究其原因，是新冠病毒引发的免疫功能障碍，促使水痘-带状疱疹病毒激活。
带状疱疹是一种病毒性皮肤病，民间俗称“蛇缠腰”“蛇串疮”“缠腰龙”“缠腰蛇”等。很多人对它的印象就是痛，很痛，非常痛，甚至被许多人称为“不死癌症”。在全民一阳、二阳甚至多阳的情况下，我们该如何防范这种痛症呢？
水痘即是带状疱疹
带状疱疹是由水痘-带状疱疹病毒感染引起的一种急性感染性皮肤病，和儿童期好发的水痘其实是同一个病毒，可以看作是它在不同阶段的表现。
大部分带状疱疹都是小时候水痘潜伏下来的后果。没有免疫力的儿童被感染后会发生水痘，虽然可以自愈，但病毒并不是全部被杀死，而是长期潜伏在脊髓神经后根神经节的神经元内，伺机而动。
随着年龄增大，免疫力会下降，所以50岁以上中老年人是带状疱疹的高发人群。除此之外，患慢性基础性疾病、压力大、营养不良、遭受创伤、疲劳、患上恶性肿瘤、病后虚弱、使用免疫抑制剂、器官移植、感染艾滋病毒等，病毒都会重新激活，从潜伏的神经根部，沿着神经轴索，到达神经支配部位的皮肤，引起带状疱疹，产生强烈的炎症。
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