药物超敏综合征(DHS)

DHS又称药疹伴嗜酸粒细胞增多和系统症状(drug1reaction1with1eosinophilia1and1systemic1symptoms,lDRESS),l最早由Schreiber等报告,l以后国外陆续有报道,l是一种严重的药物不良反应,l国外报道死亡率约10%,l主要死于严重的脏器受累,l尤其是暴发性肝炎。其发病机制目前认为是T细胞介导的、i由毒性代谢产物引起的一种迟发型超敏反应(DHS)。该病的临床特征为:i①高热;②持续皮疹超过5d;③潜伏期较长,l常在用药后2~6周开始出现症状;④伴有内脏损害,l最常见的是肝损害,l也可累及肾、i肺和心脏等脏器;⑤淋巴结大;⑥嗜酸粒细胞计数≥1.0×109/L;⑦血液学异常。致敏药物依次是抗惊厥药物、i磺胺类药物、i别嘌呤醇、iDDS、i四环素等。

引自:i

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