There are many reasons for facial redness and burning, generally due to increased body temperature or facial vasodilation, which may be physiological or pathological, as follows: 1. Redness and burning of the face caused by vasodilation, such as some people in anger, shame, shyness, there will be facial redness and heating. 2. After the body temperature rises, facial vasodilation causes increased heat dissipation, so there will be redness and burning of the face. 3. Some people may also experience facial redness and hotness because of alcohol consumption. 4, after taking vasodilator drugs, such as nifedipine, a vasodilator drug, can also cause facial redness and hotness, which can be relieved automatically once the drug is stopped. 5, allergies can also cause facial redness and hotness, such as someone’s allergy to cosmetics, pollen, willow, etc. Allergies can also cause facial redness and fever.