how is asthma caused
Answers
Exposure to various irritants and substances that trigger allergies (allergens) can trigger signs and symptoms of asthma. ... Airborne substances, such as pollen, dust mites, mold spores, pet dander or particles of cockroach waste. Respiratory infections, such as the common cold.
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Answer :-
In general terms, "Asthma" can be defined as a disorder that causes the airways of the lungs to swell and become narrow, leading to wheezing, shortness of breath, chest tightness and coughing.
Extra Information :-
☆ Asthma is caused mainly due to inflammation in the airways of the lungs.
☆ When an asthma attack occurs, the muscles surrounding the airways become tight and the lining of the air passages swells.
☆ The swelling of the air passages results in the reduction of the amount of air that can pass by.
☆ In sensitive people, asthma can be triggered by be breathing in allergenic substances.
☆ Common asthma allergens include the following substances :-
- Animals (Pet hair or dander)
- Changes in weather (most often in cold weather)
- Dust and Smoke
- Chemicals in the air
- Chemicals in food
- Hardcore workout
- Emotional stress
☆ "Asthma" attacks can last for minutes to days.
☆ "Asthma" attacks can prove to be highly dangerous and even fatal, if the flow of air is severely restricted.