The purpose of this study is to give an overview of the new treatments approved by the U.S. Food and Drug Administration (FDA) for use in psoriatic arthritis (PsA).FDA has approved three new drugs for PsA: Certolizumab-pegol: a PEGylated Fc-free tumour necrosis factor inhibitor (TNFi); ustekinumab: an anti interleukin (IL)-12 and IL-23 mAb; and apremilast and oral phosphodiesterase 4 inhibitor.