Cough Hypersensitivity Syndrome: A Distinct Clinical Entity

We postulate that most patients with chronic cough have a single discrete clinical entity: Cough Hypersensitivity Syndrome. We constructed a questionnaire that elicits the major components of the syndrome. Here we describe the validation of this questionnaire. Following iterative development, the Hull Airway Reflux Questionnaire (HARQ) was administered to patients and normal volunteers. It is self-administered and comprises 14 items with a...