The general time for allergy symptoms to subside on their own varies according to the type of disease, severity, and patient’s constitution, and needs to be analyzed on a case-by-case basis. In the case of contact allergy, the use of anti-allergy medication with the removal of allergens can generally improve in about 1-2 weeks. However, if no medication is used, the time to subside on its own should be extended accordingly. In the case of acute urticaria, timely anti-allergy treatment will generally improve within 2 weeks. However, if left untreated, the condition may persist and eventually form chronic urticaria, requiring treatment for 2 months in mild cases and even 3-6 months or more on average in severe cases. In addition, in the case of seasonal allergies, such as allergic rhinitis, it takes several months of recovery to get better on its own. In general, young and middle-aged people in good health recover faster than older people; those with low allergen exposure get better faster than those with high exposure. When allergic symptoms appear, patients are advised to go to the Department of Allergology, Department of Otolaryngology or Department of Dermatology of regular hospitals as soon as possible to receive scientific and standardized anti-allergic treatment to avoid delaying the disease.