Occupational Medicine Advance Access originally published online on May 29, 2009
Occupational Medicine 2009 59(5):357-359; doi:10.1093/occmed/kqp080
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Case Report |
Occupational asthma due to exposure to chengal wood dust
1 Occupational Safety and Health Division, Ministry of Manpower, Block C, Kim Seng Road, Singapore 239436, Singapore
2 Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Outram Road, Singapore 169608, Singapore
Background Chengal is a resistant rainforest hardwood that is commonly used in South-East Asia for the construction of boats, bridges, house structures and furniture. It contains oligostilbenoids, phenolics, quinones and resins.
Aims To describe a case of occupational asthma (OA) related to chengal wood dust.
Methods The patient was evaluated clinically for asthma in relation to occupational history, serial peak flow monitoring and specific inhalation challenge (SIC) test.
Results Peak flow monitoring showed significant deterioration during exposure to chengal wood dust at work. SIC test resulted in an isolated immediate asthmatic reaction.
Conclusions Exposure to chengal wood dust can lead to OA and possibly rhinitis. The underlying mechanism should be investigated.
Keywords Dust; occupational allergy; occupational asthma; rhinitis
Correspondence to: Lee Lay Tin, Office of Clinical Governance, Occupational Health Service, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433. e-mail: Lay_Tin_LEE{at}ttsh.com.sg