When we breathe in, oxygen moves through either nose or mouth to a long tube called trachea that divides into two bronchial tubes. The lungs are attached to the two bronchial tubes that have many nerve endings called alveoli. When oxygen reaches the lungs, it gets absorbed by the alveoli and mixes into the bloodstream. Moreover, the carbon dioxide is then released by alveoli, which passes through the bronchial tube to reach the trachea and is released from the body.
When someone has asthma, the trachea and bronchial tube inflames and fills with mucus. The airway becomes sensitive and tightens, making it difficult for people with the condition to breathe.
People with asthma often suffer from the coughing, shortness of breath and wheezing because they are the most common symptoms.
Asthma can also cause inflammation and swelling in the lungs, a condition called bronchoconstriction.
As asthma is an allergic reaction to environmental and genetic changes, a trigger can induce an episode of asthma attack. People with asthma have sensitive airways that cause severe symptoms in response to unnecessary triggers like dust, climate change, etc.
Although mild asthma may not need medication, it is recommended for people with symptoms to visit a doctor regularly.
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