The face is generally referred to as the face, and facial allergy is a very common form of allergy. Allergy symptoms usually manifest as itching, but also can be accompanied by facial rash, papules, blisters and other symptoms, occasionally facial swelling, scaling and other abnormalities may occur, sometimes local changes in the face, and sometimes systemic allergies are reflected in the face. 1. Acute phase: erythema, papules, and pimples appear on the face, facial swelling, local blisters may grow, and occasionally oozing or vesicles; 2. Sub-acute phase: the main manifestations are In the acute stage, the rash fades to dark red and is hardly accompanied by blisters, ooze or vesicles; 3. Chronic stage: the rash is dark red or pigmented, the local skin is rough and thick, and there may be scales or scabs. Facial allergies are often caused by changes in the environment that are too cold or too hot, or by long-term exposure of the face to irritating substances, such as cosmetic allergies, animal fur allergies, and allergies during seasonal changes. If the allergic symptoms are mild, local ice packs can be applied to relieve itching after removing allergic substances, while boric acid solution can be applied as prescribed by the doctor, or zinc oxide ointment or tacrolimus ointment can be applied locally to relieve the symptoms. If the symptoms are more serious, it is recommended to seek medical attention in time, and intravenous injection of compound glycyrrhetinic acid injection or glucocorticoids can be used for treatment. In daily life, avoid contact with allergens to prevent aggravation of allergy or recurrence of the disease. In addition, pay attention to a light diet and avoid spicy and irritating foods. During the period of allergy, try to avoid using cosmetics and do not scratch the face to avoid breakouts and infections.