The first thing you need to do is to avoid allergens, and at the same time, you can use physical therapy and medication to alleviate and improve allergy symptoms. 1. Avoiding allergens: The main cause of facial redness and swelling is the exposure of the body to allergens, which needs to be avoided in a timely manner to avoid re-exposure to allergic symptoms. 2. Physical therapy: patients can use cold and wet compresses to relieve and improve the symptoms of skin redness and swelling, such as the use of wet towels soaked in water, mainly by lowering the temperature of the skin to achieve the purpose of relieving redness and swelling. 3. Medication: The medication is mainly anti-allergic drugs, such as topical calcium-modulating phosphatase inhibitors such as pimecrolimus ointment, tacrolimus ointment, etc., combined with oral chlorpheniramine maleate tablets, ibastine tablets, loratadine tablets, and other antihistamine drugs. It is recommended that patients seek medical advice in time to confirm the allergens and then avoid them in time for targeted treatment. All of the above drugs should be used under the guidance of a doctor.