In medicine is the axillary temperature is greater than 37.5 ℃ will be considered a fever, 37.5-38 ℃ between the state of low fever only, but need to combine the specific circumstances of the baby, to determine the high temperature is pathological, or physiological. Pathological is naturally that the baby is sick, there are infections, runny nose, sneezing, diarrhea and other combined symptoms. But some children do not have any other symptoms, just a slightly higher temperature, such as 37.5 ℃, 37.6 ℃, 37.8 ℃, while the other conditions are very good, we must rule out what triggers the emergence of a transient high temperature, such as high ambient temperatures or the baby’s strenuous activities, strenuous crying, when the body produces heat is more, the body temperature may be measured high. And the baby may wear too much clothing, cover the blanket, this time the temperature will also be higher. This kind of high can not be called fever, this kind of situation dynamic observation can be, can be relieved by themselves. If the fever is real and accompanied by other symptoms, such as infection inflammatory disease, you need to go to the hospital.