asthma

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Related to Allergic Asthma: allergic rhinitis

asthma

(ăz`mə, ăs`–), chronic inflammatory respiratory disease characterized by periodic attacks of wheezing, shortness of breath, and a tight feeling in the chest. A cough producing sticky mucus is symptomatic. The symptoms often appear to be caused by the body's reaction to a trigger such as an allergen (commonly pollen, house dust, animal dander: see allergyallergy,
hypersensitive reaction of the body tissues of certain individuals to certain substances that, in similar amounts and circumstances, are innocuous to other persons. Allergens, or allergy-causing substances, can be airborne substances (e.g.
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), certain drugs, an irritant (such as cigarette smoke or workplace chemicals), exercise, or emotional stress. These triggers can cause the asthmatic's lungslungs,
elastic organs used for breathing in vertebrate animals, excluding most fish, which use gills, and a few amphibian species that respire through the skin. The word is sometimes applied to the respiratory apparatus of lower animals.
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 to release chemicals that create inflammation of the bronchial lining, constriction, and bronchial spasms. If the effect on the bronchi becomes severe enough to impede exhalation, carbon dioxide can build up in the lungs and lead to unconsciousness and death. Following a steady 30-year decline, asthma deaths in the United States, especially among poor, inner-city blacks and among the elderly, began to rise from the late 1970s through the early 1990s. At the same time, the incidence of asthma also increased, both nationally and worldwide.

There is no cure for asthma. Although the disease may go through a period of quiescence, it appears that childhood asthmatics do not outgrow the disease as previously believed. Treatment includes inhaled or oral steroids or bronchodilators (albuterol, theophylline), breathing exercises, and, if possible, the identification and avoidance of triggers.

asthma

[′az·mə]
(medicine)
A pulmonary disease marked by labored breathing, wheezing, and coughing; cause may be emotional stress, chemical irritation, or exposure to an allergen.

asthma

a respiratory disorder, often of allergic origin, characterized by difficulty in breathing, wheezing, and a sense of constriction in the chest
References in periodicals archive ?
Omalizumab in severe allergic asthma inadequately controlled with standard therapy: a randomized trial.
Significance of association of raised serum total IgE with development of allergic asthma was calculated using Chi square test.
Based on diagnostic parameters, 68 (45.6%) patients had non-allergic asthma, whereas 81 (54.4%) patients had allergic asthma. In 81 (54.4%) patients, we did not find airway obstruction (FEV1 [greater than or equal to]80%), whereas airflow limitation (FEV1 <80%) was recorded in 68 (45.6%) patients.
The NLRP3 independent of inflammasomes participated in the pathogenesis of allergic asthma in this model.
To elucidate the primary immune cell response underlying how maternal N[O.sub.2] exposure enhanced symptoms of allergic asthma to OVA sensitization and challenge, we measured the levels of the type 2 and type 1 cytokines.
After all, our study is the first one to investigate the significance of distinct levels of serum sCD200, 25(OH)D, and Hcy in allergic asthma patients.
If you have allergic asthma and one of those allergens enters your airways, your immune system reacts by causing the muscles in your airways to tighten, inflame, and become blocked with mucus.
(2011) Increased expression of aryl hydrocarbon receptor and interleukin 22 in patients with allergic asthma. Asian Pac J Allergy Immunol 29: 266-72.
* The report provides a snapshot of the global therapeutic landscape of Allergic Asthma
It concluded that blocking a specific protein in the lungs with an antibody both alleviates baseline inflammation and provides resistance to allergens for those with mild allergic asthma. "It was known that the epithelial cells which line the airways in the lungs produce a protein called thymic stromal lymphopoietin (TSLP) that causes inflammation.
- moderate to severe persistent allergic asthma who have had a skin or blood test that is positive for allergic asthma and whose asthma symptoms are not controlled by asthma medicines called inhaled corticosteroids.
Specialists told Gulf News the most common allergies this time of the year are allergic rhinitis (hay fever), allergic conjunctivitis and allergic asthma.