asthma

(redirected from Asthmatics)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

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.
..... Click the link for more information.
), 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.
..... Click the link for more information.
 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 ?
He continues: Southampton researchers, working alongside asthma patients, made the original discovery that weakened immunity amongst asthmatics was key to viral impacts; now study participants are helping us to confirm that discovery and translate it into treatments for their, and other asthmatic patients , benefit through the work of the unit.
Despite asthma being among the most common complaints of H1N1 patients, researchers found that asthmatics hospitalised with the virus had less severe symptoms.
Interleukin production is higher in asthmatics than in people without the disorder.
It can be troublesome for asthmatics because cold, dry air can bring bronchial spasms.
In the study of about 2,400 asthmatics and 4,700 non-asthmatics, the incidence of diabetes was higher among those with asthma, as was the incidence of heart disease.
Studies have been conducted investigating the role of different inflammatory markers in asthmatics and results support the hypothesis that inflammation is present in this disease.
Inhalers are more effective than oral forms of medication such as pills and syrups in controlling asthmatic attacks
Among those at risk from serious life-threatening symptoms and even death are patients with pre-existing respiratory illnesses and also asthmatics.
A separate study published in the Primary Care Respiratory Journal found some asthmatics try to make their inhalers "last longer" by taking them less frequently.
Diet, exercise, and enough sleep are all basic factors, and "Asthma-Free Naturally" gives all the necessary advice, a must for asthmatics or parents of asthmatic children.
When supplied by inhalation to the respiratory trees of asthmatics in remission, magnesium reduces the ability of both histamine (1) and methacholine (2) to produce bronchospasm, suggesting that it protects against various agents that may provoke spasm of the bronchial musculature.
The aim of this study was to evaluate the clinical features of asthmatics with bronchiectasis compared with pure asthmatics.