To diagnose<unk>  it is necessary to confirm the symptoms of<unk>  and establish the causal connection with the work environment. Various diagnostic tests can be used to aid in diagnoses of work related<unk> . A spirometer is a device used to measure timed expired and inspired volumes, and can be used to help diagnose<unk> . Peak expiratory flow rate (PEFR) is a hand held device which measures how fast a person can exhale and is a reliable test for<unk> . Serial PEFR can be measured to see if there is a difference in ability to exhale at work compared to that in a controlled environment. A non-specific bronchial hyperreactivity test can be used to support the diagnose<unk> . It involves measuring the forced expiratory volume in 1 second (FEV-1) of the patient before and after exposure to methacholine or mannitol. Presence of airway responsiveness i.e. significant drop in FEV-1 can be seen in patients with<unk> . Specific inhalation challenges test consist of exposing the subjects to the suspected<unk>  agent in the laboratory and/or at the workplace and assess for<unk>  symptoms as well as a reduction in FEV1. Other tests such as skin prick test, serum immunologic testing and measurement of sputum eosinophils can also be useful in establishing the diagnosis of<unk> .
Occupational asthma
Mineral dust airway disease
Occupational lung disease
Brittle asthma
Thunderstorm asthma
Organic dust toxic syndrome
Asthma
Reactive airway disease