UV allergy, also known as solar dermatitis and sun rash, is a common photosensitive skin disease, which is generally more frequent in spring and summer, generally in exposed parts of the skin, which can present varying degrees of papules, erythema, blisters, pigmentation, and in severe cases, nausea, fever, vomiting and other systemic symptoms. For patients with UV allergy, creams and reagents should be selected for treatment according to the degree of their condition, as follows: 1. For patients with mild UV allergy, ice water or glyburide lotion can be used to reduce the redness and heat after sun exposure; 2. For patients with exudation at the allergy site, saline solution or boric acid solution can be used for wet compresses to Reduce the symptoms of redness, pain and exudation produced by UV allergy; 3. For patients with multiple injuries after UV allergy, topical indomethacin solution, ointments or preparations containing corticosteroids can be used for external rubbing. If necessary, antihistamines can be used in combination under the guidance of a doctor for treatment. In addition, for patients who are prone to UV allergy, they should wear a wide-brimmed hat, long-sleeved clothing, or apply sunscreen to exposed areas before going out to avoid direct UV exposure as much as possible. For patients whose condition is not severe, after the symptoms stabilize or subside, the sun exposure time can be gradually extended to gradually increase the optical tolerance, which also helps the treatment and prevention of photosensitive skin disease.