Background: Establishing whether patients are exposed to a 'known cause' is a key element in both the diagnostic assessment and the subsequent management of hypersensitivity pneumonitis (HP).
Objective: This study surveyed British interstitial lung disease (ILD) specialists to document current practice and opinion in relation to establishing causation in HP.
Methods: British ILD consultants (pulmonologists) were invited by email to take part in a structured questionnaire survey, to provide estimates of demographic data relating to their service and to rate their level of agreement with a series of statements.