O’Byrne PM, Ryan G, Morris M, McCormack D, Jones NL, Morse JL, Hargreave FE: Asthma induced by cold air and its relation to non-specific bronchial responsiveness to methacholine. Am Rev Resp Dis 125:281–285, 1982O'Bryne PM, Ryan G, Morris M, McCormack D, Jones NL, Morse JLC,...
1. Cold or dry air 2. Exercise 3. Exposure to cigarette smoke or strong scents 4. Other respiratory infections Many people with asthma have multiple triggers. You’ll need to pay close attention to your allergies and asthmatriggers becausethey can change over time. ...
This form of asthma happens during physical activity when you breathe in air that’s drier than what’s in your body, and your airways narrow. It can affect people who don’t have asthma, too. You’ll notice symptoms within a few minutes after you start to exercise, and they might last...
Non-allergic (intrinsic) asthma is caused by factors other than allergies, such as exercise, stress, inhaling cold air, smoke, viral infections, and other irritants. This type of asthma is less common, develops more often in adults, and is more difficult to treat than allergic (extrinsic) a...
80% of asthma attacks in adults and 60% in children are caused by respiratory viruses. • Exercise, the effects of which differ somewhat from those of the other triggers. • Allergenic indoor air pollution from newsprint and other literature such as junk mail leaflets and glossy magazines ...
Infections such ascoldsand theflu Outdoor air pollution Tobacco smoke Occupational asthma is caused by breathing in chemicals or industrial dusts at work Exercise-induced asthma happens during physical exercise, especially when the air is dry
Asthma induced by cold air and its relation to nonspecific bronchial responsiveness to methacholine. We compared bronchial responsiveness to isocapnic hyperventilation of cold dry air at -18 degrees C and 0% humidity with bronchial responsiveness to inhale... PM O'Byrne,G Ryan,M Morris,... - ...
Occupational asthma:It is caused by irritants in the workplace, such as air pollution and dust. A change in the work environment may cause asthma symptoms to improve or go away. Allergy-induced asthma:Patients allergic to pet dander,pollen, and smoke can take steps to avoid asthma attacks ...
Cold air challenge (CACh) has been shown to discriminate between children with asthma and healthy young children. Hyperventilation with dry room-temperature air is a simplified alternative. We compared responsiveness in young children with asthma between two standardized, single-step protocols: dry air...
Wheezing caused by viral infections, particularly respiratory syncytial virus and human rhinovirus, may predispose infants and young children to develop asthma later in life. In addition, early-life exposure to air pollution, including combustion by-products from gas-fired appliances and indoor fires,...