Inclusion Criteria:

• The patient will meet all the following criteria to be considered eligible for the study:

  • Aged 18 years or over.
  • All patients who have attended full asthma workups from November 2021 till date
  • Willing and able to consent to use their data in this study (opt-out form or e-consent).
  • Patients referred to the Portsmouth asthma service for diagnosis and further management of presumed asthma. Comorbidities are common in asthma, thus patients with co-existing conditions such as obesity, bronchiectasis or COPD will be included.

Exclusion Criteria:

• The participant may not enter the study if either of the following apply:

  • Unable to comprehend the study and provide informed consent, e.g., insufficient command of English in the absence of someone who can adequately interpret.
  • Patients with other primary respiratory conditions, such as ILD.