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What is Asthma?

Asthma is a chronic lung condition with symptoms of difficulty breathing and wheezing caused by inflammation and narrowing of the air passages. The condition ranges from mild to severe. During an asthma attack, the airways become inflamed and narrower as the muscles surrounding them constrict. The flow of air is blocked partially or completely as mucus produced by the inflammation fills a narrower passageway. Asthma affects both the lung's larger airways, called the bronchi, and the lung's smaller airways, called the bronchioles. Treatment focuses on preventing or stopping inflammation, and relaxing muscles that line the airways.
For information on symptoms, diagnosis, and prevention click here.
Photo couretsy Cambridge Health Alliance.

Research News

Featuring Harvard Medical School and Affiliated Hospitals

A New View of Asthma's Cause A newly recognized type of immune cell may be part of the cause.

Slow Adoption of Asthma Inhalers
Asthma inhalers adopted more slowly for minority patients and children.

Maternal History Influences Risk of Asthma in Children Exposed to Cats
Exposure may triple the risk of asthma in some children.

Study Uses Video Narratives to Better Understand Asthma Management
Video narratives made by patients have been found an effective way to understand how young people manage their illness.

>More Research News

Research Stories

From the Harvard University Gazette

Researchers Uncover Cause of Asthma Natural killer cells leave people breathless.

Climate, Asthma Connected High pollen increases asthma suffering.

Bottle Before Bed May Lead to Asthma Children with family history may face higher risk when bottle-fed before bed.

>More HU Gazette on Asthma

Scientific Reports

From HMS Faculty Newsletter Focus

Studies Unmask Undercover Asthma Agent Discovery of link to natural killer T-cells could breathe life into search for a cure.

Anatomy of an Asthma Attack Blood-borne tracer illuminates patchy pattern of constriction.

Lung Imaging Method Allows Visualization of Airways New imaging technique provides clear MRI images of lung airways during breathing.

Mouse Model Devised that Develops Asthma T-bet mouse strengthens evidence for protein controller as therapeutic target.

>More Research Stories

Copyright © 2006 The President and Fellows of Harvard College
Last updated October 2006