Asthma trigger
Asthma trigger
Asthma trigger (pronunciation: /ˈazmə ˈtriɡər/) refers to any substance, condition, or activity that can provoke an asthma attack in a susceptible individual.
Etymology
The term "asthma trigger" is derived from the Greek word "asthma," meaning "panting," and the Old Norse word "triggr," meaning "to pull, to trigger."
Definition
An asthma trigger is any environmental, physical, or psychological factor that can induce or exacerbate the symptoms of asthma, a chronic respiratory condition characterized by inflammation and narrowing of the airways. These triggers can vary widely among individuals with asthma and can include allergens, irritants, infections, stress, exercise, and changes in weather.
Types of Asthma Triggers
- Allergens: These include substances such as pollen, dust mites, mold spores, pet dander, and certain foods. Exposure to allergens can cause an immune response in sensitive individuals, leading to inflammation and constriction of the airways.
- Irritants: These include substances such as tobacco smoke, air pollution, chemicals, and strong odors. These can irritate the airways and trigger an asthma attack.
- Infections: Respiratory infections, such as the common cold or influenza, can inflame and narrow the airways, triggering an asthma attack.
- Exercise: Physical exertion can cause the airways to narrow, a condition known as exercise-induced asthma.
- Stress and Emotion: Strong emotions and stress can trigger an asthma attack by causing rapid breathing and tightening of the airway muscles.
- Weather Changes: Changes in weather, particularly cold air, can trigger an asthma attack by causing the airways to constrict.
Related Terms
External links
- Medical encyclopedia article on Asthma trigger
- Wikipedia's article - Asthma trigger
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