The purpose is to compare clinical, functional, professional and socio-economical
characteristics of patients with occupational asthma and work aggravated asthma.
Secondary purposes are:
- to evaluate diagnostic value of new non-invasive techniques such as exhaled nitric oxide
and cytology of induced expectoration;
- to estimate medical-social becoming of diagnosed work-related asthma after one year;
- to establish a biobank of blood samples of individuals with work related asthma for
measurement of cytokines and search for genetic polymorphisms associated with asthma.