Severe facial allergic redness and swelling are mainly caused by the neurological manifestations resulting from excessive exposure of the skin to allergens. Patients need to promptly visit the hospital for desensitization treatment. Through injection of drugs, the patient's serum is altered to enable the production of antibodies that resist allergens, thereby reducing the symptoms of allergy. However, after desensitization treatment, patients need to pay attention to skin hygiene and avoid re-exposure to allergens. Additionally, their diet should be predominantly bland. Here are some suggestions:

1. Daily Skin Care

During warmer seasons, allergy sufferers often mistakenly believe that the warm external temperature and increased sebaceous gland secretion mean they can neglect skin care or overuse cleansers and strong degreasing skin care products. This can easily damage the sebaceous membrane and reduce skin resistance, leading to skin allergies. Many people stop caring for their skin after experiencing allergies, resulting in insufficient skin moisture, easy wrinkling, and a vicious cycle. Therefore, regardless of the season, allergy sufferers should be very careful with their skin care, including washing their face three times a day with warm water, and consistently using special skincare lotions, toners, and moisturizers.

2. Dietary Adjustment for Desensitization

Allergy sufferers should maintain a balanced diet, reducing the intake of greasy, sweet, and stimulating foods, as well as alcohol and smoking. Some foods can also be allergens, so it is important to identify them. Eating foods rich in vitamins can enhance the immune system. According to nutritionists, onions and garlic contain anti-inflammatory compounds that can prevent allergies. Various vegetables and fruits can also help resist allergies, with cauliflower and citrus fruits being particularly effective. People with allergic constitutions are advised to drink soy milk daily.

3. Desensitization Treatment

For patients with severe symptoms, medical intervention can be sought to alter their allergic constitution. In this treatment, doctors use chemical methods to alter the patient's serum. By administering antigen solutions prepared from modified allergens, dairy products, pollen, and other substances through subcutaneous injection, and gradually increasing the concentration of allergens, the human immune system is adjusted to produce resistance to allergic substances, thereby effectively preventing allergies.