There are multiple definitions:

1. International Labor Organization(English)

   • ICOERD
   • Organizations (documentation), Occupational disease
   • https://doi.org…ealth.2014-0073

2. inducible laryngeal obstruction(English)

   • cause similar symptoms to asthma, including dyspnea and chest tightness, with an estimated prevalence of up to one-fifth of patients with asthma. Both conditions can be comorbid with asthma, and there is evidence that they are misdiagnosed and mistreated as asthma
   • BPD
   • Asthma, Diagnostics
   • https://doi.org/10.2196/44453