Infants with fever will have the following symptoms: 1. When the child has a fever, there will be a faster respiratory rate, manifested as shortness of breath, such as the phenomenon of huffing and puffing. 2. When the fever is high, it will lead to the phenomenon of flushing of the infant’s face. 3. When the fever is high, the infant will cause changes in appetite due to the rise in body temperature, a decrease in appetite, and even the performance of not eating milk, which can cause bloating, nausea or the appearance of diarrhea. 4. 5.Individual infants in a high state will have cold hands and feet, poor peripheral circulation, and may have symptoms of convulsions and seizures due to high fever.