Abstract
A pilot study of 30 patients with chronic bronchitis is described with particular reference to the role allergy might play in the aetiology. The methods used gave no conclusive evidence of specific allergic sensitivity in the majority of the cases studied. It is concluded that this may be due to the absence of allergic sensitivity, the limitations of the available tests for allergy or to the definition of our cases resulting in the exclusion of those with an easily demonstrable allergic background. The physiological and pathological changes found in the main bronchi were very mild indeed compared with the morbid anatomical changes at the level of the terminal bronchioles described by others. Extension of the investigation on similar lines is not considered worth while.
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