A potent contact allergen of Phacelia (Hydrophyllaceae)

@article{Reynolds1980APC,
  title={A potent contact allergen of Phacelia (Hydrophyllaceae)},
  author={G. Reynolds and W. Epstein and D. Terry and E. Rodr{\'i}guez},
  journal={Contact Dermatitis},
  year={1980},
  volume={6}
}
The major contact allergen of Phacelia crenulata (Hydrophyllaceae) has been identified as geranylhydroquinone. A maximization test of geranylhydroquinone showed this to be a potent sensitizer comparable in degree to poison oak/ivy urushiol. Comparative patch testing on humans with urushiol established that the Phacelia allergen does not cross‐react with poison oak or ivy. 
Unusual contact allergens from plants in the family Hydrophyllaceae
Contact allergens of an urban shrub Wigandia caracasana
Oro‐pharyngeal mucosal reaction to fenoterol
Angio‐oedema without hives, IgE and omalizumab
Miscellaneous dermatitis-inducing plants.
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