title: Symptom perception in childhood asthma: the role of anxiety and asthma severity.
abstract: This study tested the relationship of anxiety and asthma severity to symptom perception. Eighty-six children diagnosed with mild or moderate asthma had symptom perception and pulmonary function measured throughout methacholine challenge (to induce bronchoconstriction). Higher trait anxiety was associated with heightened symptom perception (controlling for pulmonary function) at baseline. Greater asthma severity was associated with blunted symptom perception (controlling for pulmonary function) at the end of methacholine challenge and with a slower rate of increase in symptom perception across methacholine challenge. These results suggest that anxiety plays a role when children's symptoms are mild, whereas medical variables such as severity play a role in perception of changes in asthma symptomatology as bronchoconstriction worsens.
authors.affiliation: Department of Psychology, University of British Columbia, Vancouver, BC, Canada. echen@psych.ubc.ca
authors.forename: Edith
authors.initials: E
authors.lastname: Chen
authors.forename: Cathy
authors.initials: C
authors.lastname: Hermann
authors.forename: Denise
authors.initials: D
authors.lastname: Rodgers
authors.forename: Tina
authors.initials: T
authors.lastname: Oliver-Welker
authors.forename: Robert C
authors.initials: RC
authors.lastname: Strunk
mesh_terms: D000293:Adolescent; D001007:Anxiety; D001249:Asthma / Q000523:psychology*; D016085:Bronchoconstrictor Agents / Q000008:administration & dosage; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D016210:Methacholine Chloride / Q000008:administration & dosage; D008923:Missouri; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires
chemical_list: D016085:Bronchoconstrictor Agents; D016210:Methacholine Chloride