The diagnosis and treatment of adults with obstructive airways disease in general practice.

Two hundred and one patients diagnosed by their general practitioners as having asthma and 113 as having chronic bronchitis were compared by symptomatology and airways reversibility. Though the majority of patients given these two diagnoses could be separated by symptom complex, in about one-third such differentiation was difficult. There was no significant difference in bronchodilator reversibility between the asthmatics and chronic bronchitics. Nine out of 15 (60%) asthmatics and four out of 18 (22%) chronic bronchitics responded by 15% or more to a course of oral corticosteroid drugs. The majority of corticosteroid responders had been undertreated. The problems arising from the poor correlation between airways reversibility and symptomatic diagnosis are discussed.