In this paper, Sexual Dysfunctions are explained in terms of DSM-IV-TR criteria. Information about prevalence and occurrence rates is specified. Phases of sexual intercourse is explicated which enhance knowledge about disorders. Physiological factors such as reproductive life cycle, urinary track infections, diabetes, cardiopathies and drug side-effects and past and current psychological conditions are explained to assess the basis of sexual dysfunctions. Influence of variables on treatment is underlined with respect to different therapeutic tools, techniques and methods. Outcome and effectiveness research support evaluated. Lastly, important aspects in the course of therapy, elements and key concepts that would be beneficial for successful outcome are discussed.