“…There are reports of sensitization and contact dermatitis following occupational exposure to phenanthrene alkaloid opiates and their derivatives 4 . Reactions have been reported to formulations of: codeine, codeine dihydrophosphate, ethylmorphine, morphine, diacetylmorphine, naloxone, oxycodone, thebaine, oripavine and norhydroxymorphinone 4‐9 . To our knowledge this is the first reported case of contact allergy to nalmefene.…”