Very red cheeks may be related to physiological factors, environmental factors, medication factors, skin diseases and so on. 1. Physiological factors: if the patient’s mood changes, with shyness, nervousness, shame or anger, emotional excitement, resulting in a change in the temperature of the cheeks, the appearance of flushing, the 2. Environmental factors: If the place you are in is too hot or too cold, it will also stimulate the contraction of the pores of the face and cause redness. Staying in a place with strong ultraviolet rays for a long time and intense ultraviolet irradiation can lead to plateau redness on the skin of the face. 3. Drug factors: certain drugs may lead to skin flushing, such as atropine, vasodilators and so on. 4. Skin diseases: If you come into contact with certain allergens, it may lead to skin allergies, redness, swelling, itching and other symptoms; if you have rosacea, the typical symptoms are redness and rashes on the face or nose; patients with lupus erythematosus will have butterfly-like red patches on the face, leading to redness. Because the symptoms can occur for a variety of reasons, it is best for patients to seek medical attention to determine the cause of the symptoms.