Allergic asthma is asthma caused by an allergic reaction. It’s also known as allergy-induced asthma. You may have allergic asthma if you have trouble breathing during allergy season. People with allergic asthma usually start feeling symptoms after inhaling an allergen such as pollen. The Asthma and Allergy Foundation of America reports that more than half of people with asthma have allergic asthma. Allergic asthma is treatable in most cases. Asthma is a chronic inflammatory disorder of the airways that leads to airflow obstruction and bronchial hyperresponsiveness. Clinical features of asthma include episodic cough, wheeze, and dyspnea, which may resolve with avoidance of triggers or therapy. Characteristic triggers of asthma are irritant type airway exposures, including cold air, exercise, various environmental allergens, and work-related exposures.

Source
Source
Source