Hypertrophic Lichenoid Eruption Caused by Exposure to Colour Film Developer Used for Motion Picture Film

Abstract

Colour film developers based upon substituted phenylene diamines have been a known cause of occupational allergic contact dermatitis (ACD) and lichenoid eruptions. These reactions are well documented in patients involved in the developing of colour photography film. It has been suggested that lichenoid eruptions evolve from ACD. We describe a patient who presented with an eruption identical to lichen planus soon after commencing work as a technician in a motion-picture-film-processing facility. There was no history of a preceding ACD. Patch testing identified sensitivity to Kodak colour developer (CD-2) used for motion picture film, with which he worked on a daily basis.