Infantile rash is a common acute febrile rash disease in infants and young children, mainly caused by human herpes virus type 6, followed by human herpes virus type 7 infection can also be caused, commonly known as rose rash. The incubation period is generally 7-14 days, mostly seen in children aged 6-18 months, but rare after the age of 3 years, the onset of the disease can be lifelong immunity. (1) fever: generally high fever can last 3-5 days, up to 39 ℃ -40 ℃, then a sudden drop, the fever rash out, during the cough, diarrhea and other symptoms; (2) rash: usually 9-12 hours after the fever subsides rash, first on the trunk, then spread straight body, the rash usually lasts 1-2 days The rash usually lasts 1-2 days, without hyperpigmentation or desquamation. 2. Judgment by clinical examination (1) routine blood tests: blood tests two days before the onset of the disease suggest an increase in the white blood cell count, after the onset of the rash is significantly reduced, while the lymphocyte count is increased to make a preliminary diagnosis; (2) virus isolation test: is the method of confirming the diagnosis of HHV-6, HHV-7 type of infection, if the results suggest a positive virus, can confirm the diagnosis of infant and child emergency rash. The treatment of infant rash is as follows: 1. symptomatic treatment: physical cooling for high fever, or use a small amount of antipyretic agent, and appropriate rehydration; 2. Chinese medicine treatment: give the child a Chinese medicine to clear heat and detoxify. The care of infant rash is as follows: 1. keep the room quiet, air circulation and temperature and humidity appropriate; 2. give liquid or semi-liquid food; 3. drink more warm water or juice to facilitate sweating and urination; 4. keep the skin clean and dry, avoid scratching.