When the skin of the face is allergic and itchy, the main focus should be to stop the itching and repair the skin lesions. If in the acute stage of redness, swelling and itching is obvious, you can first use saline, or boric acid solution cold wet compress. In the interval between wet compresses, topical application of weak hormone creams, such as Denide cream, mometasone furoate cream, etc., can also use calcium-regulated phosphatase inhibitor ointment, such as tacrolimus ointment, pimecrolimus cream, etc. alternately to reduce the adverse reactions of hormones, and at the same time, oral antihistamines such as imipramine extended-release tablets can be taken to counteract allergies and to stop itching. If the symptoms are more serious after the attack, or after the acute treatment is not cured, there are still corresponding symptoms, it is recommended to go to the hospital to clarify the cause, try to avoid contact with allergens to reduce the possibility of allergy, and secondly, symptomatic treatment can be carried out according to the symptoms, common treatment methods include the following: 1. Mild symptoms: If simple erythema and papules appear, oral antihistamines can be taken, such as loratadine If the symptoms are mild, oral antihistamines, such as loratadine tablets, cetirizine hydrochloride tablets, or oral vitamin C tablets, calcium gluconate tablets, etc., can be used externally, such as hydrocortisone butyrate cream, etc., most patients have a good prognosis; 2. When the symptoms gradually improve, the swelling subsides and the erosion surface gradually heals, the treatment can be changed to external rubbing with weak hormonal ointments such as dinaide ointment. Patients should not scratch the allergic area during the period of allergy, use hydrating skin care products according to their personal conditions, and pay attention to skin hydration, moisturizing, nourishing and repair. Try to hydrate through diet, eat more fruits and vegetables, such as apples, cucumbers, lettuce, etc. You should also avoid eating spicy and irritating foods, such as chili peppers, onions, raw garlic, etc., to avoid recurrent allergies, which may thin the skin stratum corneum or damage the barrier function of the skin.