184 definitions of MSA. Meaning of MSA. What does MSA stand for? MSA abbreviation. Define MSA at AcronymFinder.com
The symptoms of wheezing include a musical or whistling sound and labored breathing, particularly when exhaling; sometimes they're accompanied by a feeling of tightening in the chest. You can hear wheezing more loudly if you plug your ears and exhale rapidly, or by using a stethoscope held at the neck or over the lungs.
The symptoms occur due to narrowing of the airways, inflammation and accumulation of mucus in the lungs or bronchial tubes. Increased production of mucus insides the airways can be a cause of the symptoms.It is not necessary that all people with this condition have the same symptoms.ronchospasm or abnormal contractions of the airways, swelling of the airway linings, overproduction of mucus are common causes of wheezing in asthma. 1  Shortness of breath: Trouble breathing is a classic sign of an asthma attack.