The folk term “rash” is a generic term for several viral rashes, including rubella, measles, early childhood emergency rash, chicken pox, and so on. The common feature of viral rashes is a generalized rash with fever, usually without itching and with a bright red color. The duration of the rash varies according to the type of virus, the duration of the fever, the maximum body temperature, and the time relationship between the fever and the rash. For example: 1. Measles. It manifests as high fever, with a temperature of up to 39 or 40°C, with marked conjunctival congestion, accompanied by lacrimation, photophobia, often accompanied by coughing, and characteristic grayish-white spots visible in the mouth, called measles mucosal spots. Because of accumulation of respiratory tract and airways, it is often accompanied by pneumonia. Measles is the heaviest of the common rashes, and isolation is recommended until more than 5 days after the rash subsides, and for combined pneumonia, for more than 10 days. 2.Emergency rash in young children. It is a high fever (39 ℃) first, about 3-5 days later, the temperature recedes, the process of temperature remission, or half a day after the complete remission, the whole body appears rose-colored rash, pressure of the fading. No special treatment is needed. Topical application of glyburide lotion 2-3 times a day is sufficient. 3. Rubella. Also known as “three-day measles”, the symptoms are relatively mild compared to measles, manifesting as a red rash all over the body one day after the fever has subsided, so pay attention to rest and drink more water. Viral rash generally does not require special treatment, pay attention to drink more water, avoid wind and cold, isolation, to eliminate cross-infection, oral Banlangen granules or Qingkailing granules can be.