Tendency of the smooth muscle of the tracheobronchial tree to contract more intensely in response to a given stimulus than it does in the response seen in normal individuals. This condition is present in virtually all symptomatic patients with asthma. The most prominent manifestation of this smooth muscle contraction is a decrease in airway caliber that can be readily measured in the pulmonary function laboratory.

A bronchial disease that is characterized by chronic inflammation and narrowing of the airways, which is caused by a combination of environmental and genetic factors resulting in recurring periods of wheezing (a whistling sound while breathing), chest tightness, shortness of breath, mucus production and coughing. The symptoms appear due to a variety of triggers such as allergens, irritants, respiratory infections, weather changes, excercise, stress, reflux disease, medications, foods and emotional anxiety.

A chronic respiratory disease manifested as difficulty breathing due to the narrowing of bronchial passageways.

A form of bronchial disorder with three distinct components: airway hyper-responsiveness (RESPIRATORY HYPERSENSITIVITY), airway INFLAMMATION, and intermittent AIRWAY OBSTRUCTION. It is characterized by spasmodic contraction of airway smooth muscle, WHEEZING, and dyspnea (DYSPNEA, PAROXYSMAL).

Synonyms:

Hyperreactivity, Bronchial

Bronchial hyperresponsiveness

Asthma unspecified

Other forms of asthma

Asthma NOS

Pneumonopathy due to inhalation of other dust

Asthma, unspecified type, without mention of status asthmaticus

Hyperreactive airways disease

Bronchial hypersensitivity

Bronchial Hyperreactivities

Asthma, unspecified type, with acute exacerbation

Airway hyperreactivity

chronic obstructive asthma with status asthmaticus

chronic obstructive asthma

Asthma unspecified (disorder)

Pneumopathy due to inhalation of other dust NOS (disorder)

Bronchial hyperreactivity

chronic obstructive asthma with acute exacerbation

DUST PNEUMONOPATHY NEC

Hyperreactivities, Bronchial

BHR - Bronchial hyperreactivity

Exercise induced asthma

Exercise-induced asthma

Asthmas

Asthmatic

Pneumopathy due to inhalation of other dust NOS

ASTHMA NOS W (AC) EXAC

Hyperreactive airway disease

Exercise-induced asthma (disorder)

Asthma NOS (disorder)

Pneumopathy due to inhalation of other dust

BA

Pneumopathy due to inhalation of other dust (disorder)

Asthma, unspecified

Bronchial asthma

Asthma, Bronchial

Asthma (disorder)