Doctor or nurse use a device called peak flow meter. This measures how much, how fast, air can be expelled from lungs.
This gives a measure of how severely breathing is affected. If measured regularly, over time, these readings can also help reveal how well or badly the asthma is being controlled.
A child can be diagnosed with asthma if he/she has inhaled something that blocks the airways.
In some adults, the symptoms of asthma may be a sign of heart disease, especially if wheeziness occurs when there has never been an asthma attack in the past. Heart failure can cause congestion (excess fluid) of the lungs, and have symptoms similar to asthma.
Minimize outdoor activities when pollen counts are high. Peak pollen times are usually between 10 a.m.-4 p.m.
Keep your car windows closed when traveling
Try to stay indoors when humidity is reported to be high, and on windy days when dust and pollen are blown about
Take a shower after spending time outside—pollen can collect on your skin and hair
Consult an allergist/immunologist, who can evaluate your history and conduct tests to find out if your asthma needs to be managed more effectively. They will help you develop an asthma action plan to manage your symptoms