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	Powered by Dorland's Medical Dictionary for Healthcare Consumers
	This information is provided by an independent source. Merck & Co., Inc. is not responsible for this content. Please discuss any and all treatment options with your healthcare professional. The manufacturer of a product generally has the most complete information about that product.
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	A |  B |  C |  D |  E |  F |  G |  H |  I |  J |  K |  L |  M |  N |  O |  P |  Q |  R |  S |  T |  U |  V |  W |  X |  Y |  Z   allergic asthma  asthma due to an allergy to antigens; usually the offending allergens are suspended in the air in the form of pollen, dust, smoke, automobile exhaust, animal dander, or similar substances. More than half of the cases of asthma in children and young adults are of this type. Called also extrinsic asthma. Copyright 2007. An Elsevier publication. All rights reserved. Click here for important legal information about Dorland's Medical Dictionary.

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