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皮疹是某些传染病的基本特征之一,因此掌握皮疹的出疹时间、形态、顺序、消退时间等在传染病的诊断上有重要意义。现将几种常见传染病皮疹的特点叙述如下:一、麻疹(一)粘膜斑(科氏斑):是由于口腔粘膜下腺基底部细胞坏死,伴有周围血管扩张(红晕)所致。1.时间:此斑多出现于起病后2～3日,持续1～2日消失,有的持续时间较长。少数病例出现较晚,可与皮疹同时见到。2.部位:起于第一大臼齿对面的颊粘膜上,并可在齿龈及上、下唇见到。3.形态:初为0.5～1.0毫米之白色斑点,逐渐增多,互相融合。不少病人在1～2天内即可密布于两颊。
Rash is one of the basic characteristics of some infectious diseases, so to grasp the rash rash time, shape, order, regression time in the diagnosis of infectious diseases of great significance. Now the characteristics of several common infectious disease rash are described below: First, measles (a) mucosal plaque (Coriolus spot): is due to oral submucosal cells at the base of the necrosis, accompanied by peripheral vasodilation (flush) due. 1. Time: This spot more than 2 to 3 days after onset, continued for 1 to 2 days disappeared, and some longer duration. A few cases appear late, with the rash can be seen at the same time. 2. Location: starting from the first molars on the buccal mucosa opposite, and in the gums and the upper and lower lip to see. 3. Form: the beginning of 0.5 to 1.0 mm of white spots, gradually increased, mutual integration. Many patients in 1 to 2 days can be covered in cheeks.