Why do asthmatics wheeze when they breath?

Turbulence. It's a combination of bronchoconstriction, edema, and excess mucus that partially block small airways causing whistling sounds at various tones depending on airway diameter and force of exhalation. With asthma you frequently can hear many tones at once. Areas without air flow don't make noise.
Physics. Wheezing is the noise one hears when the airway is narrowed -- think about a hose as one's airway and if one steps on the hose there is a noise. In the lungs that narrowing, in asthma, is the result of chronic inflammation and muscle spasms that cause the narrowing of the airways.

Related Questions

Every time I breathe out its hard to breath and I wheeze. Could this be asthma?

Maybe. It is really necessary to have a good physical exam and possibly so called pulmonary function tests to come up with a definite diagnosis. Read more...

Why do sometimes I hear wheezing sound in my breath? Is there a possibility I have asthma?

Constricted bronchia. Wheezing usually indicates constricted bronchial tubes in asthma, or mucus in the bronchial tubes in copd. You need to determinet the exact cause of your wheezing and then treatment with inhalers, will help significantly. You need to see your physician if you have been a smoker because wheezing in one area could mean a blocked bronchial tube from mucus, or an obstructing cancer. Read more...

I have a doormant asthma for 20yrs now. But I dont think running as exercise is good for me, coz I get out of breath easily & wheeze. Any other exercise?

Uncontrolled. Vs Exercise Induced Asthma, you should be able to exercise without a problem, see an asthma specialist an Allergist/Immunologist, check aaaai.org or acaai.org for an allergist in your area, good luck. Read more...

What is the best asthma medicine for wheezing and coughing and shortness of breath?

ICS. There are essentially two types of medications for asthma: controller medications and rescue medications. The controller you get placed on is determined by your severity and this can be changed based on the degree of control of symptoms and risk. We follow guidelines for severity and treatments such as naepp and gina. However, in short, most asthmatics need to be on inhaled corticosteroids. Read more...
Inhalers... The best treatment for control of these asthma symptoms is bronchodilator and steroid inhalers. If severe enough symptoms are present, a course of systemic steroids may be needed to get these symptoms under control. Avoid any allergic triggers. Antibiotics when there is an infection present is also needed. See your doctor for any worsening symptoms. Read more...

Wheezing. Short of breath 3 weeks. Better with meds for 2 days then wheezing again. Using neb every 4 hrs. Could it be something other than asthma?

Asthma. It is asthma but not controlled, the albuterol is not cutting it, you need to contact your doctor asap to adjust your medications, you need a controller medication. Read more...
Uncontrolled asthma. You are getting into serious trouble and need to see your doctor asap because you end up in the hospital. If you use solely a nebulized bronchodilator for your asthma regularly your asthma may actually get worse. Read more...

I wheeze get tired and feel week and run out breath and also have a frequently occurring cough can it be asthma or anything else no family history

yes. It could be asthma. It would be beneficial to see your primary doctor about this. A referral will need to be made to a pulmonologist for a pulmonary function test (this is the main way asthma is diagnosed). Read more...
asthma symptoms. Butterfly, it sure sounds like you have asthma. No matter the family history, cough can be the only symptom of asthma, but with wheezing i believe you have the diagnosis. See your doctor for pulmonary evaluation and likely medication. Read more...

Dry unproductive cough 4months & struggle 2 breath & wheezing during exercise - dr said it wasnt asthma but allergies, allergy meds aren't helping?

Mgt. Your wheezing and history of allergies, are indicative of bronchospasm which may have allergic and non allergic triggers. I would suggest asking your physician to prescribe Albuterol with a spacer device and to perform lung function testing with and without Albuterol. Read more...