[An underestimated prevalence: the association food allergy-occupational asthma].

Two cases of asthma induced by isocyanates and complicated by food allergy to cruciferae (plants of the mustard family) are reported. Cross-allergy is suggested as a pathophysiological mechanism of this complication. Food allergy being difficult to diagnose and therefore often missed in a context of occupational asthma, the frequency of this association is probably underestimated.