Contact dermatitis due to orchids (Cymbidium and Oncidium)
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Updated: Jun 24, 2026

A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
Published on: March 24, 2023
Masahiro Iwata1, Takuro Kanekura, Akira Gushi
1Department of Dermatology, Kagoshima University Graduate School of Medical and Dental Sciences, Japan. baggio@m3.kufm.kagoshima-u.ac.jp
Abstract:
A 64-year-old male who cultivated orchids as a hobby, had noticed itchy erythematous lesions on both hands since 6 months earlier. His eruptions had gradually worsened and scales and fissures had appeared. Although he was treated with topical corticosteroids by a doctor, his erythema showed no improvement. Patch tests with the orchids he cultivated, fertilizers, antiseptics and insecticides showed positive reactions to the stems of Cymbidium and Oncidium orchids. A diagnosis of contact dermatitis attributable to the cultivated orchids was made.
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