Work-related toxic epidermal necrolysis?

A case of toxic epidermal necrolysis is described in an employee of a company that carries out plastic extrusion using various resins, including cellulose acetate, co-polyester, polyvinyl chloride, acrylonitrile-butadienestyrene, and polyethylene. Air sampling during normal operating conditions indicated only trace amounts of hydrogen chloride and the plasticizer diethylphthalate. However, pyrolysis products of resin plugs could include compounds such as formaldehyde, acrylonitrile, and chlorinated hydrocarbons that have been associated with previous case reports of either erythema multiforme, Stevens-Johnson syndrome, or toxic epidermal necrolysis. The development of toxic epidermal necrolysis in this worker was directly preceded by exposure to a vapor from a machine used to dry cellulose acetate. The problems in determining work relatedness and advising about return to work are discussed.