allergy induced asthma

Our Dr. just informed us that our three year old son is likely to have allergy induced asthma.  We have an appointment with a specialist next week.  Can you tell me a little about what this actually is.   Thanks

[National Jewish]

Asthma is a chronic condition of the lungs that affects the airways with the following changes:

1) Inflammation or Swelling
Recent research has shown that inflammation of the lining of the airways is the most common feature of asthma.  When they are stimulated, certain cells lining the airways release chemical substances (mediators), which lead to inflammation.  This causes the airway lining to swell and narrow.  The inflammation may last for weeks following an episode.  Most people with asthma have some degree of inflammation all of the time.  Some long-term control medications can help prevent and reduce inflammation.

2) Increased Sensitivity
When inflammation occurs in the airways, the airways become more sensitive.  When the airways are more sensitive, you are more likely to have asthma symptoms when exposed to things that make your asthma worse.  When there is less inflammation, the airways are less sensitive and you are less likely to have asthma symptoms when exposed to things that make your asthma worse.  There are many different things that can make asthma worse.  Allergies are one possibility.

3) Obstruction of Airflow
In addition to inflammation, further airway obstruction may occur due to the tightening of the muscles that surround the airways.  This is called bronchospasm and causes further narrowing of the inflamed airways.  Inhaled quick relief medications are generally very effective in reversing the bronchospasm.
In some people with asthma, the mucus glands in the airways produce excessive, thick mucus, further obstructing the airways.

[starion]

Hi!  I, my husband & both teen children have significant allergies and asthma.  For us, this means that our allergies can make our asthma worse when they are not under good control.  In addition, when they ARE under good control, our lung function is better.
There have been numerous studies which show that folks with allergies are more likely to develop asthma and many with allergies and asthma find that allergy triggers also worsen their asthma.
There's lots of good info you can read at www.NationalJewish.org, particularly their MedFacts, Understanding and Asthma Wizard sections.  Best of luck!
Aloha,
Starion

[Valorie803]

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