一、流行性脑脊髓膜炎的皮肤瘀点(以下简称瘀点),往往呈淡红褐色或紫红色,用针刺破涂片检查可找到脑膜炎双球菌;而跳蚤叮咬所致的皮疹(以下简称皮疹)为红色,较瘀点鲜明,涂片检查找不到脑膜炎双球菌。二、瘀点往往同时伴有其他症状和体征,如高热、头痛、呕吐、脑膜刺激症状等;皮疹则缺乏全身症状和体征。三、瘀点压之不退色;皮疹用手指压之迅速散开,色变淡,松指后随即恢复原色。四、瘀点如仔细观察,其边缘往往不规则,呈不同的形状;皮疹则多为圆形的小红点,边缘较整齐,间或其外围有过敏性稍微隆起的红色丘疹,伴有痒感。 First, the meningococcal meningitis skin petechiae (hereinafter referred to as petechiae), often pale reddish brown or purple, with needle puncture smear can find meningococcus; and the rash caused by flea bites ( Hereinafter referred to as rash) is red, more petechial stained smear can not find meningococcus. Second, petechia often accompanied by other symptoms and signs, such as fever, headache, vomiting, meningeal irritation, etc .; skin rash is the lack of systemic symptoms and signs. Third, petechia pressure does not fade; rash quickly spread pressure with your fingers, color fades, loose fingers immediately after the restoration of primary colors. Fourth, the petechiae, such as careful observation, the edge is often irregular, showing different shapes; rash is mostly circular red dot, the edge is neat, between or around the slightly allergic raised red papules, accompanied by itching .