The treatment of psoriasis is mainly based on anti-inflammatory and/or anti-hyperproliferative agents. The topical steroids appeared in the fifties and were the first therapeutic breakthrough for psoriasis, followed by methotrexate and phototherapy in the sixties, photo-chemotherapy (PUVA) in the seventies and acitretin and cyclosporine in the eighties. The targeted biologic therapies represent a whole new era of therapeutic possibilities with a highly beneficial safety record. The choice of treatment depends on a large series of factors, including the type and extend of the psoriasis, the patient's preferences, co-medications, comorbidities and drug tolerance. This overview presents the currently available topical and systemic agents for treating psoriasis, including topical corticosteroids, vitamin D derivatives, UV-light based therapies, methotrexate, cyclosporine, acitretin, and the biologic agents such as the TNF antagonists etanercept, adalimumab and infliximab, as well as the anti-p40 IL12/23 agent ustekinumab. Newer, very promising, agents aiming the Th17 pathway are under development for psoriasis.