Erythema multiforme-like eruption associated with contact dermatitis to cutting oil

A 48-year-old Japanese man developed coalesced erythema multiforme-like lesions on the forearms and the dorsa of hands that were exposed to a cutting oil product. Subsequently, multiple, round erythematous lesions with iris formation occurred on the trunk and four extremities that had no direct contact with the oil. It is suggested that erythema multiforme can be induced via some allergic processes following a contact reaction.