Occupational Asthma Reference

Vandenplas O, Pirson F, D'Alpaos V, Vander Borght T, Thimpont J, Pilette C, Occupational asthma caused by chamomile, Allergy, 2008;63:1090-1092,

Keywords: chamomile, camomile, challenge, immediate reaction, IgE, Matricaria chamomilla, Asteracea, rhinitis, occupational asthma, tea packer, bronchial reactivity, sputum eosinophilia

Known Authors

Olivier Vandenplas, Universite Mont-Goginne, Yvoir Olivier Vandenplas

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43 year old man developed rhinitis and asthma 11 years after starting work as a maintenance worker in a tea packing plant processing black tea (Camellia sinensis) and herbal teas including chamomile, lime (Tilia cordata) and dog rose. Symptoms related to chammile packing. Histamine Pc20 20mg/ml after 8 months off work pre-challenge. Immediate reaction to tipping chomile 300g for 1 hour, negatibe reaction tipping black tea. Induced sputum 6 hours after black tea showed no eosinophils, 6 hours after chamomile Pc20 8mg/ml and sputum eosinophils (7.5%). Lime tea also negative. SPT to chamomile extract 10mg/ml 6mm wheal, black and lime negative. IfE to chamomile positive (Immunocap)

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Associated Questions

Registered users of this website have associated this reference with the following questions. This association is not a part of the BOHRF occupational asthma guidelines.

Which agents cause occupational asthma and which workers are at risk?
burgeps Chamomile dust established as cause of occupationa astm, this should revise previous statements that chmomile dust is ony a non-specific irritant in tea packers

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Evidence table:
Occupational asthma: occupational asthma due to chamomile tea dust (new cause) occupational asthma due to chamomile tea dust (new cause)

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