Eating lychee skin allergy red swelling belongs to the manifestation of allergic dermatosis, patients can improve the condition through general treatment, medication, physical therapy and other ways. 1. General treatment: patients allergic to lychee should avoid eating this thing, but also to avoid external stimuli, such as hot water scalding, violent scratching, excessive washing and so on. 2. Drug treatment: patients can take antihistamines under the guidance of the doctor, such as loratadine, cetirizine, etc.; mast cell stabilizers, such as ketotifen; Severe cases can be short-term use of glucocorticosteroids, such as prednisone and other systemic therapy, but also external itch relievers, such as glycerine lotion; glucocorticosteroids, such as halomethasone cream and other local treatment. 3. Physical therapy: long-wave ultraviolet radiation therapy, cryotherapy and other physical therapy to improve the patient’s symptoms. It is recommended that patients strictly follow the doctor’s instructions to use medication, do not change the dose of drugs or abuse drugs, so as not to affect the treatment, pay attention to the monitoring of the condition in life, if there is any abnormality in a timely manner, such as medical treatment.