Childhood emergency rash does not occur without a rash. If there is no rash, it means that it is not childhood emergency rash and may be related to other diseases. It is a common rash disease in children under 2 years of age. It is characterized by a sudden high fever, usually above 39℃ or even above 40℃, which lasts for about 3 to 5 days, and then suddenly subsides, followed by the appearance of a skin rash. This is mainly due to human herpesvirus infection, which may be transmitted from person to person through contact with respiratory secretions or saliva of an infected person. This is a benign, self-limiting illness that can be controlled by medications such as ibuprofen and acetaminophen given in conjunction with your doctor, and the rash requires no special treatment. Because of the nature of the rash, children will have a rash. It is recommended to give appropriate treatment according to the actual situation of the child.