- Subjects with a wash-out period for systemic treatment less than 12 weeks (corticosteroids, biologics and/or PUVA treatment; Examples of these therapies include, but are not limited to PUVA, Soriatane, Cyclosporine, Hydroxyurea, Mycophenolate mofetil, Sulfasalazine, Azathioprine, Alefacept, Efalizumab, Adalimumab, Etanercept, Infliximab, Rituximab, and Methotrexate)