http://wiki.answers.com/Q/FAQ/1793-17
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Too broad of symptoms. It could possibly be numerous thing such as Asthma, virus/infection of the lung (Bronchitis), virtually anything.
Most common suggestions would be Allergies or irritation (Smoking, excessive cardio, heart issues, etc.)
Try breathing in moist air, from the shower or a vaporizer, to help the wheezing. Adverse effects (high temp, high elevation, strenuous activity) can cause shortness of breath but there are many more possibilities.
Asthma
shortness of breath and wheezing could be .....
wheezing, shortness of breath, and labored breathing.
wheezing from shortness of breath
The symptoms range from mild (coughing, wheezing, and shortness of breath) to severe and life threatening (severe shortness of breath and difficulty getting enough oxygen).
Symptoms of asthma: shortness of breath, wheezing, chest tightness, coughing
>wheezing >some loss of smell >yellowing of the fingernails >shortness of breath
coughing and coughing up blood, wheezing, chest pains or tightness of the chest and shortness of breath
Sometimes chronic coughing, or coughing up blood, shortness of breath, chest pain, or wheezing.
If you want to know the signs of asthma, here they are: coughing, especially at night, wheezing, shortness of breath and chest tightness, pain, or pressure. These are all signs that could be asthma.
Using the term shortness of breath alone could mean it is present at rest OR when exerting oneself Dyspnea specifies when shortness of breath is present with exertion
Usually characterized by the following symptoms: -Shortness of breath that worsens with physical activity -A high pitched wheezing sound when you breath -Feeling the need to gasp for breath -Flushed complexion -A dry cough
Vasculitis of the complex network of blood vessels throughout the lungs can result in severe shortness of breath, cough, chest pain, and wheezing