Type Of Asthma

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Why is Asthma on the Rise?
Although several theories exist about why asthma rates have risen during the last two decades, there probably is no simple answer, says Calman Prussin, M.D., head of the clinical allergy and immunology unit at NIAID.

One theory is that people today, especially in developed countries, are spending more time indoors, Dr. Prussin says. We are therefore exposed to more indoor allergens, such as dust mite allergen, that cause asthma. 'Our houses are now hermetically sealed to save heating and cooling energy,' he notes, 'and unfortunately this causes more indoor allergen exposure.'

Another reason may be that people today live in cleaner, more sanitary conditions than they did before the industrial revolution, relatively free of disease-causing viruses and bacteria, he says. This clean living affects our immune system. The immune system's defensive white blood cells, called T cells, have two basic 'settings,' he explains. Th1 cells fight infectious viruses and bacteria. Th2 cells fight parasites but are also involved in allergic reactions.

'We are exposed to fewer viruses and bacteria than people were 100 years ago, so perhaps our immune systems have not learned to make Th1 cells as well,' Dr. Prussin says. 'That means we have a greater proportion of Th2 cells in our bodies, which might lead to more allergies and asthma.'

Other theories point to increased levels of air pollutants, a decline in the amount of exercise people get, or rising obesity as factors in the increase of asthma. - NIAID

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Type Of Asthma

Asthma
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ASTHMA
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Extrinsic Type of Asthma
Extrinsic Type of Asthma. Extrinsic Type of Asthma. Allergen-Triggered. Appears during childhood. Paroxysmal. Family history of allergies. May be specific genes which predispose the condition. Previous slide. Next slide. Back to the first slide

Pediatric Asthma Page
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Type / Categories of Asthma
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The Indian Journal of Chest Diseases and Allied Sciences
Table of Contents. Past Issue. About the Journal. VPCI. NCCP. Editorial Board. Information for Authors. Subscription Information. Advertisement Tariff. Contact Us. Review Article. Brittle Asthma: A Separate Clinical Phenotype of Asthma? ... variability in airflow. This type of asthma was difficult to control and ...

Occupational Asthma
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Listing by Alphabetical Subject Heading: Respiratory system
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Type / Categories of Asthma
Type / Categories of Asthma. Allergic - IgE meditated. Indoor / Outdoor Allergens. Symptom Duration. Previous slide. Next slide. Back to first slide. View graphic version. /

GOT ASTHMA? LET'S TALK . . .
NOTE: March 28, 2000 - Due to lack of interest I have discontinued providing on-line education sessions for folks with poor asthma management. ... In patients with this type of asthma, there is the possibility that treatment can be conducted with medications ... Irritant driven - This type of asthma is caused by irritants in the ...

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