Swollen and itchy red face may be an inflammatory manifestation of the skin mucosa due to contact with external stimuli, such as contact dermatitis, mosquito bites, eczema and other causes can be caused. 1, less severe patients: relatively mild patients can be treated with topical zinc oxide ointment, cycloheximide cream, tacrolimus ointment or dermatol and other non-hormonal topical preparations under the premise of medical advice; 2, severe patients: patients with obvious symptoms can be treated with topical glucocorticoid ointment under the premise of medical advice. 2. Severe patients: Patients with obvious symptoms can be treated with topical glucocorticoid ointment under the premise of medical advice, and also with internal antihistamines or glucocorticoids, as well as vitamin C and calcium; for obvious swelling, cold compresses with boric acid solution can be applied locally to reduce swelling. Avoid excessive scratching, which may aggravate the condition, avoid contact with external irritants or allergic substances, and eat a light diet. If the above methods do not work, go to the hospital promptly.