The actual cause of asthma is unclear, but there are many things that are known to trigger asthma attacks in some asthmatics. Many environmental factors can make asthma symptoms worse. Allergens like pollen, mold, dust mites, and pet dander can trigger attacks in some people. Air that is polluted with irritants such as smog, smoke, and chemical fumes may also trigger asthma attacks. Nasal or chest congestion from colds, flu, or sinusitis can further restrict airflow and exacerbate asthma symptoms. Emotions, both negative and positive, can lead to changes in breathing patterns. Breaths become quicker and shallower, reducing air supply to the lungs. Already irritated asthmatic airways become “stressed” due to low oxygen flow and may trigger asthma attacks.
P.S. It is important for each person who suffers from asthma to recognize the things or situations that bring about asthma attacks so that these can be mindfully avoided.
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