Case report of occupational asthma due to palisander wood dust and bronchoprovocation challenge by inhalation of pure wood dust from a capsule

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Abstract
Occupational asthma due to exposure to exotic wood dust and to rosewood (Dalbergia family) has been reported earlier. This paper deals with a case of occupational asthma due to palisander wood dust (Dalbergia nigra) in a joiner who sanded and polished parts of musical instruments. The causal relationship was confirmed by a positive skin reaction to an allergenic preparation and a positive nonimmediate, late asthmatic reaction after inhalation challenge testing with pure palisander wood dust. A method of bron‐choprovocation testing with an occupational allergen is presented. It proved to be a practical and advantageous method in its simplicity and single‐blind application of placebo. It should, however, be used with great caution, in well‐chosen cases in whom nonspecific bronchial reactivity is proved or recorded to be in normal ranges.

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