发热是儿童最常见的医学问题之一。学前儿童的发热常常是由相对无害的自限性的病毒感染引起 ,包括流感样疾病和急性上呼吸道感染 ,这是人体防御机制抵御感染的有益作用。如果孩子只是发热而没有严重的疾病征象 ,家长应该放心。儿科医生使用药物降温 ,并不是要加快痊愈 ,只不过 Fever is one of the most common medical problems in children. Pre-natal fever is often caused by relatively innocuous, self-limited viral infections, including flu-like illness and acute upper respiratory tract infections, which are beneficial effects of the body’s defense mechanisms against infection. Parents should be reassured if their child is feverish and has no serious signs of illness. Pediatricians use drugs to cool down, not to speed up recovery, but only