March 1980

Allergic Contact Dermatitis to Quinones in Paphiopedilum haynaldianum (Orchidaceae)

Author Affiliations

From the Department of Dermatology, Division of Allergology and Occupational Dermatoses, University Hospital, Hamburg, West Germany.

Arch Dermatol. 1980;116(3):327-328. doi:10.1001/archderm.1980.01640270087024

• An eczematous eruption developed on the hands and forearms of a 68-year-old man after frequent contact with homebred specimens of the lady slipper Paphiopedilum haynaldianum. Patch tests with leaves, petals, and stems, as well as with two quinones isolated from the plant by thin-layer chromatography, gave strongly positive reactions. The results demonstrated that the recurrent skin lesions were the expression of an allergic contact dermatitis due to the quinoid constituents, which are the main contact allergens in this orchid species.

(Arch Dermatol 116:327-328, 1980)