“…Concerning the environmental risk factors, it is important to mention: stress, low-humidity, drugs, smoking, obesity and chronic infections. In addition, numerous susceptibility genes and variants (LCE3B, LCE3C, TRAF3IP2, polymorphisms in IL-17, IL-23, RUNX3 and TNF*-857) have been recognized as contributing risk factors for PsA [15,[18][19][20][21][22][23][24]. Concerning the treatment of PsA, the available therapeutic approaches are mainly oriented to relief the inflammation and/or the associated-symptoms and to 'slow-down' the progression to more advanced and severe stages of the disease.…”