Allergic urticaria is a common allergic skin disease, and the healing time of allergic urticaria varies depending on the individual’s body type and degree of illness. In milder cases, the hives usually subside within a few hours after moving away from the allergen; in more severe cases, they can often resolve within 1-2 weeks if medication is applied promptly. The allergens of allergic urticaria are usually difficult to identify, and most of them may be caused by drug, food or dust allergies. Some patients need to take anti-allergy drugs to avoid allergens, such as loratadine, cetirizine, azelastine and other antihistamines, and it usually takes 1-2 weeks for allergic urticaria to gradually improve and heal after the metabolism of allergens in the body. Allergic patients should usually take good precautions to avoid allergy-prone foods or medications, wear masks when going out, and avoid contact with allergens if they can be identified. If the condition is serious, shortness of breath, cyanosis, etc., it may be accompanied by laryngeal edema or anaphylaxis, and prompt medical attention is required.