高热体温超过39℃称为高热,41℃以上称为超高热。高热是小儿常见急诊症状之一。多数为突然起病;少数起病徐缓呈持续高热者,常因细菌或病毒感染引起,亦可见于其他原因。【诊断要点】一、常见于呼吸道感染,胃肠道、泌尿道感染次之。各种急性传染病引起者亦较多见,尚可见于寄生虫病等。二、表现为精神倦怠、面红、皮肤灼热、呼吸及脉搏增快。三、高热后出现烦躁不安、嗜睡、惊厥,甚至昏迷。四、部分病儿伴有寒战,肢端发凉,皮肤发花, High fever body temperature over 39 ℃ is called high fever, 41 ℃ above called high fever. High fever is one of the common emergency symptoms in children. The majority of sudden onset; a small number of onset of sustained hypothyroidism were often caused by bacterial or viral infection can also be found in other causes. 【Diagnostic points】 First, common in respiratory infections, gastrointestinal tract, urinary tract infections followed. A variety of acute infectious diseases are also more common cause, can still be found in parasitic diseases. Second, the performance of mental fatigue, facial flushing, skin burning, breathing and pulse faster. Third, hyperactivity after restlessness, lethargy, convulsions, and even coma. Fourth, some sick children accompanied by chills, cold extremities, hair flowers,