Asthma attacks triggered by one or more of the following factors: the allergenic substances such as pollen, mold , tobacco smoke, dust, pollution, fog, cold, various gases, strong smells, stress, medications, exercise, viral infections and some medications.
What happens in the respiratory system?

In particular, three factors, each of which causes seizures;

– Cramps in the muscles around the airways.
– Irritation / dermatitis (inflammation) in the mucous membranes of the respiratory tract that is caused by infection. The inflammation causes swelling of the mucous membrane, respiratory system are small and it becomes harder to breathe.
– Slim accumulation in the airway

If the asthma is allergic, the person often needs to get away from work. An occupational hygiene decontamination of the work environment will almost invariably be inadequate. Person must have inferred in any case and it is better to do it while there is still a view of improvement.

If asthma is the non-allergic, an examination of occupational health measures under close medical supervision, for example, symptom assessment and pulmonary function examination four times a year the first year, then twice annually for some years, to see if the measures work satisfactorily.

If these guidelines are followed to achieve a full recovery. Otherwise, the disease can become chronic in a few years and the person must leave their work without the disease shows significant improvement as a result.