Allergic contact dermatitis caused by immersion oil used for microscopy is a recently recognized phenomenon. We report a case with characteristic findings of periorbital erythema and edema in a cytogenetics technician. Positive patch test responses to epoxy resin, epoxy acrylate, and the immersion oil were noted. This case represents yet another contact allergic reaction, possibly airborne, to epoxy resin present in immersion oil used for microscopy.
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