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Respiratory allergy to exotic wood dust


Dr K. K. Eaton, The Surgery, Church Road, Bracknell, Berkshire.


Three cases are presented showing nasal and respiratory allergy to cocabolla (Dalbergia retusa) an exotic timber which is a member of the rosewood family, and also to other wood dusts. They gave positive immediate reactions on patch testing, which became negative after injections of aqueous extracts. There were suggestions in this limited study of clinical improvement.

A possible relationship of this allergy to a quinone named dalbergiones present in cocabolla exists, but further work is necessary to confirm this.

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