Mycophenolate mofetil as a treatment for urticarial dermatitis.

We report two cases of adults with urticarial dermatitis who could not be managed by a variety of treatments but who obtained good control with mycophenolate mofetil (MMF). A clinical response was seen 6-8 weeks from treatment onset and they were maintained on MMF 1 g twice daily (case 1), and MMF 1 g omni mane and 500 mg omni nocte (case 2), with no major exacerbations for many years. MMF is an immunosuppressive agent, which is currently used off-label for many dermatological conditions. To date, there have been no studies investigating the use of MMF as a treatment for urticarial dermatitis. The cases we present suggest that MMF is an effective treatment for this condition, and we recommend that MMF be considered as a treatment option.