Asthma

**Definition:** 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).

**Tree numbers:** - C08.127.108 - C08.381.495.108 - C08.674.095 - C20.543.480.680.095

**Synonyms:** - Asthma, Bronchial - Bronchial Asthma