Last Wednesday, when I was in the clinic, I received a call from a young mother at the end of the morning. ”Pan Pan has had a fever for four days in a row, but this morning the fever went down and she has a lot of rashes on her body. Could it be chicken pox?” I told her that although I didn’t see the child’s rash, generally speaking, it wouldn’t be measles, as the fever still doesn’t go down when the rash comes out, or even higher; nor would it be chicken pox, as chicken pox rashes usually start coming out on the first two days of fever. After asking some questions about the child, I learned that Pan Pan is an 11-month-old girl with a high fever of more than 39℃ for 4 days in a row, which dropped to normal after taking Merlin, but rose again in about 6-8 hours. After taking several antipyretic drugs, the temperature dropped and rose again, the mother’s mood with the rise and fall of Pan Pan’s temperature is like a roller coaster of ups and downs …… This morning, the temperature was suddenly normal, and the mother felt that she could finally put down this hanging heart, but then she found a red rash scattered on Pan Pan’s face and body, and at noon she saw some more. This young mother is very anxious at this moment. The young mother was very anxious and asked to bring the child to the hospital in the afternoon. A careful examination revealed that the child was in good spirits and could be amused, with red papules scattered on the trunk of the face and no herpes, and the oral mucosa was bare and neat, with some congestion in the pharynx and no other abnormalities. The mother of Pan Pan was told that Pan Pan had a “toddler emergency” and that the disease was characterized by a “feverish rash” and was caused by a viral infection, and that although there was no specific medicine, she should take better care at home, pay attention to cleanliness and hygiene, drink plenty of water, eat a light and easily digestible diet, and prevent exposure to cold. Three days later, the mother brought Pan Pan to the follow-up clinic and the rash had basically disappeared, and the child had basically recovered. The rash is a common disease in infants and young children characterized by high fever and rash, mostly occurring in the spring and autumn, but of course not absent in the summer, without gender differences. Features: 1, fever —— more than 39 ℃, more than 3-5 days; 2, rash —— fever subsides rash, red maculopapular rash; can last 3-4 days; face trunk for more, sometimes also seen in the limbs; 3, other accompanying symptoms —— can be absent; sometimes there will be cough, diarrhea, fontanelle bulge, and even convulsions; 4, blood routine —— can be normal; most white blood cells count decreases, neutral classification decreases, lymphatic classification increases; 5, the pathogen —— human herpes virus6,7 can be transmitted through a variety of ways, such as saliva, respiratory tract, contact, etc. 6, treatment —— no specific drugs, generally do not need special treatment; mostly give symptomatic treatment, such as temperature above 39 ℃ to give drugs or physical cooling, prevention and control of hyperthermia; if accompanied by cough to give cough symptomatic; if accompanied by diarrhea to regulate the normal flora and function of the gastrointestinal tract, etc. 7, special physical children —— do not exclude serious complications such as central nervous system diseases such as encephalitis meningitis may. Therefore, it is recommended to strengthen the care of sick children, drink more water appropriately, eat more nutritious liquid food, keep the skin clean and hygienic; if the child’s spirit is poor, persistently high fever is difficult to subside, other accompanying symptoms should promptly go to the hospital for consultation. In terms of prevention, we should strengthen feeding, enhance physical fitness, pay attention to ventilation at home, keep the air fresh, dress appropriately, prevent from getting cold, and do not take the baby to crowded places to reduce the chance of getting sick.