Contact dermatitis to photographic print coating liquid

A case of allergic contact dermititis secondary to photographic print coating liquid is described herein. Patch test reactions to the mixture were positive, but negative to the individual components which included dimethylhydantoin formaldehyde resin, the logical allergen. Formaldehyde resin allergic dermatitis, in some instances, may not be reproduced by patch testing because of various contributing factors. In this patient, the combination of components was necessary to yield a sensitivity reaction. To the best of our knowledge contact dermatitis secondary to this product has not been previously reported.