(资料图片仅供参考)
1、宝宝首先是持续3~4天发高烧，体温在39~40度之间，热退后周身迅速出现皮疹，并且皮疹很快消退，没有脱屑，没有色素沉着。
2、这些婴儿在没有出现皮疹前也有发热，热度可以比较高，但是感冒症状并不明显，精神、食欲等都还可以，咽喉可能有些红，颈部、枕部的淋巴结可以触到，但无触痛感，其他也没有什么症状和体症。
3、当体温将退或已退时，全身出现玫瑰红色的皮疹时才恍然大悟，其实这时幼儿急疹已近尾声。
4、幼儿急疹对婴儿健康并没什么影响，出过一次后将终身免疫。
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