<prompt> Not a treatment option for psoriasis -RetinoidsMethotrexateCyclosporineOral corticosteroids  <response>: Ans is d i.e. Oral corticosteroids Treatment options for psoriasisSystemic medicineso Acitretino Cyclosporineo Razoxaneo Biological therapieso Colchicineo Antithyroid drugs methimazole, propylthiouracilo Methotrexateo Hydroxyureao Mycophenolate mofetilo Goldo Zidovudineo AzathioprineTopical medicines for psoriasiso Emollientso Dithranolo Salicylic acido Tazaroteneo Topical corticosteroidso Taro Vit D and Analogueso Tacrolimus and pimecrolimus 