Patients with multiple actinic keratoses are frequently treated with topical agents such as imiquimod, an immune-response modifying agent. Adverse effects associated with imiquimod therapy are mainly limited to the application site and include erythema, crusting, scaling, and ulceration. Systemic adverse reactions such as erythema multiforme are rare. Here we report a case of a 77-year-old patient that developed erythema multiforme after treatment of actinic keratoses with imiquimod. Cessation

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... f imiquimod and treatment with local corticosteroids led to rapid regression of erythema multiforme lesions. Residual actinic keratoses were treated with cryotherapy.