Occupational allergic contact urticaria to yucca (Yucca aloifolia), weeping fig (Ficus benjamina), and spathe flower (Spathiphyllum wallisii).
BACKGROUND
Occupational contact urticaria (CU) from plants is often reported, but it is less often attributed to decorative houseplants. We present an atopic gardener and caretaker of plants who developed CU when occupationally exposed to weeping fig, spathe flower, and yucca.


METHODS
Sensitization was evaluated by skin prick tests (SPT) and analyses for IgE antibodies.


RESULTS
SPT were positive to all three plants, and IgE antibodies were found to weeping fig and spathe flower. SPT were also performed with several decorative houseplants in more than 600 patients. Positive SPT was found to weeping fig (12%), African milk tree (8.3%), yucca (5.8%), Chinese rose (4.7%), massangana (4.6%), bird's nest fern (3.2%), and spathe flower (3.2%).


CONCLUSIONS
Our study indicates that SPT and tests for IgE antibody are useful in detecting occupational CU caused by houseplants.
Kanerva
L
L
Section of Dermatology, Finnish Institute of Occupational Health, Helsinki, Finland.
Estlander
T
T
Petman
L
L
Mäkinen-Kiljunen
S
S
D000328:Adult; D017449:Dermatitis, Allergic Contact / Q000209:etiology* / Q000276:immunology; D009783:Dermatitis, Occupational / Q000209:etiology* / Q000276:immunology; D006801:Humans; D007073:Immunoglobulin E / Q000032:analysis; D019668:Liliaceae / Q000009:adverse effects; D008297:Male; D009790:Occupations; D010944:Plants / Q000009:adverse effects*; D012882:Skin Tests
D007073:Immunoglobulin E