Patient: Episodes of wind, large and numerous, red in color, mostly in the afternoon and evening, starting last year, around December. Tests: Last year, when I had an attack, I was tested for acute urticaria, but I couldn’t get rid of it for a long time. In March of this year, the allergen test was done again, and it was house dust mite and dust mite allergy, and the medicine was good when I ate it, but it started again when I stopped. It is a recurring problem, and it is a lot of torture for children. I want to get an effective treatment. Doctor: According to the time projection, the patient now belongs to chronic urticaria. According to the allergen test results, you can take attention to the living room hygiene and ventilation, wet mopping instead of sweeping, try not to lay carpets, tapestries, cloth sofas in the living room, wash the bedroom furniture and curtains and other items that can easily accumulate dust frequently, and do not keep pets. Diet control the intake of spicy, seafood and other allergenic foods. You can insist on taking antihistamine drugs under the guidance of your doctor. After a period of effective control, gradually reduce the dose of drugs, most patients can be cured.