Sexual dysfunctions are widespread, affecting approximately 43% of women and 31% of men. Hypoactive sexual desire disorder has been reported in about 30% of women and 15% of men in population-based studies and is associated with a wide variety of medical and psychological causes. Sexual arousal disorders, including erectile dysfunction in men and female sexual arousal disorder in women, are found in 10–20% of men and women and are strongly correlated with age in men. Orgasmic disorder is relatively common in women and affects about 10%–15% in community-based studies. Conversely, premature ejaculation is the most common sexual disorder in men, with a reporting rate of about 30% in most studies. Finally, sexual pain disorders have been reported in 10%–15% of women and less than 5% of men. In addition to their widespread prevalence, it has been found that sexual dysfunctions have a significant impact on interpersonal functioning and overall quality of life in both men and women (Rosen RC, Curr Psychiatry Rep 2(3):189–195, 2000).