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.
Possible causes of wheezing include: 1  Allergies. 2  Anaphylaxis (a severe allergic reaction, such as to an insect bite or medication) 3  Asthma. Bronchiectasis, a chronic lung condition in which abnormal widening of bronchial tubes inhibits mucus clearing.  Bronchiolitis (especially in young 1  children) Bronchitis.  Childhood asthma.