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- Title
Occupational rhinoconjunctivitis caused by the common indoor plant, Hoya compacta.
- Authors
Sherson, D.; Nielsen, A. D.; Mortz, C. G.; Vestergaard, L.; Brandt, L. P. A.; Jørs, E.; Bælum, J.
- Abstract
Background Allergic reactions to the common house plant Hoya compacta (HC) have not previously been described. Aims To confirm HC as the cause of rhinoconjunctivitis in three horticultural workers. Methods Greenhouse working conditions were reproduced in our challenge chamber. Results All three cases developed rhinoconjunctivitis when working with HC plants. A control challenge was performed in two cases with iceberg lettuce causing no symptoms. Nasal volume measured by acoustic rhinometry (AR) fell after all three active challenges, but also after one of the control challenges. Conclusions Our study confirms that HC may cause occupational rhinoconjunctivitis and asthma through a Type I hypersensitivity reaction. Specific inhalation challenges, nasal nitric oxide measurement and AR may be useful additional tools in supporting such diagnoses for occupational physicians to consider.
- Subjects
RHINITIS; OCCUPATIONAL allergies; RESPIRATORY allergy; HOUSE plants; HOYA; ETIOLOGY of Asthma; ACOUSTIC rhinometry; ALLERGIC conjunctivitis
- Publication
Occupational Medicine, 2017, Vol 67, Issue 6, p490
- ISSN
0962-7480
- Publication type
Article
- DOI
10.1093/occmed/kqx095