Allergen-induced asthma is a very common disease in clinical practice. The recovery time after exposure to allergens varies from person to person. Some patients, who are less sensitive to certain allergens, usually experience gradual improvement in symptoms after avoiding the allergen, which may take two to three hours. However, some allergens may cause more severe allergic asthma attacks, in which case medication is necessary to manage the symptoms. Commonly, appropriate use of anti-allergy medication and drugs to relieve bronchospasm are required for relief.

Therefore, the severity of allergic asthma symptoms caused by different allergens and the individual’s physical constitution varies. Thus, the recovery time after exposure to allergens varies from person to person.