[Occupational asthma due to chamomile: case report].

We report the case of a worker employed in the packaging of herb infusions who came to our attention because he was suffering from breathing disorders caused by occupational exposure to chamomile dusts. The diagnostic procedure we followed highlighted a baseline lung function within the normal range, while the skin prick tests and the RAST test were positive to both seasonal aeroallergens and chamomile. To perform a specific bronchial provocation test, the patient was challenged in an exposure chamber with nebulization of an extract from chamomile flowers.