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).
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10H-Phenothiazine-10-ethanaminium, N,N,N,alpha-tetramethyl-, methyl sulfate, mixt. with 3,7-dihydro-7-(2-hydroxypropyl)-1,3-dimethyl-1H-purine-2,6-dione and 4,9-dimethoxy-7-methyl-3-(1-piperazinylmethyl)-5H-furo(3,2-g)(1)benzopyran-5-one