An Observational Study Using Novel Questionnaire to Characterize Cough Phenotypes in Patients With Chronic Cough

Inclusion Criteria: 1. Male and female patients \> 18yrs of age 2. Patients with a current cough of at least 8 weeks duration 3. Patients with a clear chest X-Ray within previous 2 yrs 4. Non- smoker 5. Able to understand and comply with the requirements of the study and sign Informed Consent forms. 6. Good understanding of written and spoken English - Exclusion Criteria: 1. Recent respiratory tract infection (\<4 weeks prior). 2. Current smokers or ex-smokers with \<6 months' abstinence prior to Study. 3. Any clinically significant or unstable medical or psychiatric condition that would, in the opinion of the investigator, interfere with the subject's ability to participate in the study safely. 4. Participation in any clinical research study evaluating an investigational drug or therapy within 30 days or within 5 half-lives (whichever is longer) of the investigational drug prior to Study visit. If the subject was in an observational clinical study no washout is required. 5. Subjects who, in the opinion of the Investigator, should not participate in the study for any other reason.