文档介绍：County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang aroved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
实用文档
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
临床表现 注意事项：
基本损害为皮肤出现风团。常先有皮肤瘙痒，随即出现风团，呈鲜红色或苍白色、皮肤色，少数患者有水肿性红斑。
据医学研究发现，其实荨麻疹引起的风团大小和形态都是不断的改变，所以说他们形状不一，发作时间不定。风团逐渐蔓延，融合成片，由于真皮乳头水肿，可见表皮毛囊口向下凹陷。
风团持续数分钟至数小时，少数可延长至数天后消退，不留痕迹。皮疹反复成批发生，以傍晚发作者多见。风团常泛发，亦可局限。有时合并血管性水肿，偶尔风团表面形成大疱。
部分患者可伴有恶心、呕吐、头痛、头胀、腹痛、腹泻，严重患者还可有胸闷、不适、面色苍白、心率加速、脉搏细弱、血压下降、呼吸短促等全身症状。
疾病于短期内痊愈者，称为急性荨麻疹。若反复发作达每周至少两次并连续6周以上者称为慢性荨麻疹。除了上述普通型荨麻疹，还有以下特殊类型的荨麻疹。
患者对外界的不强机械的感应及做出的反应增强，因此，在皮肤上产生风团。然而由于患者在搔抓后，或在紧束的腰带、袜带等出局部起风团，瘙痒症状。
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
实用文档
County continuation records has examined and approved the draft, spirit, believe, comprehensive Yearbook of zhuanglang already prepared draft, entered the phase of evaluation. Civil air defense work
皮肤划痕在刺激后6～8小时出现风团与红斑，风