The medical term for fever is febrile, and whether to apply a hot or cool towel to a febrile forehead depends on the period. 1. During the period of rapid rise in body temperature, there will be chills, chills and poor peripheral circulation, try to wipe the head with a hot towel can promote peripheral circulation and improve the chills or poor peripheral circulation. 2. When the body temperature is in a state of persistent high fever, the patient will show hot and dry situation, the head temperature is relatively high, you can use a cold towel on the head to reduce the body temperature, reduce discomfort. 3. The body temperature begins to drop to show the symptoms of sweating, you can use a hot towel on the head, to reduce the sweat on the body caused by the feeling of discomfort, but also to make the peripheral circulation to ensure a good state, you can continue to sweat. During the fever period must be good bed rest, drink more warm water, more urination, is conducive to heat dissipation, but also need to eat a light diet, eat more fruits and vegetables, to keep the bowel movement. Strengthen the nutrition, eat more high protein, high energy food, strengthen the body. If the body temperature is relatively high and lasts for a long time, you need to consult a doctor in time and avoid self-medication.