Symptoms of lacquer tree allergy include itchy skin, rash, and in severe cases, breathing difficulties and asthma. After the first contact with lacquer tree, due to the role of the body’s immune system, antibodies appear in the body, when the body again after contact with the lacquer tree, the body already exists in the antibody and lacquer tree antigen combination, immune complex deposition in the skin will cause the skin capillary dilatation, and the formation of a rash, accompanied by obvious itching. If the allergic reaction is more serious, it can cause laryngeal edema, bronchial smooth muscle contraction and life-threatening symptoms such as dyspnea and asthma. Therefore, people who are allergic to lacquer trees should be careful to avoid re-exposure. If there is a rash, asthma and other symptoms should be sent to the hospital as soon as possible, after the cause of the disease is clear and active treatment.