Couple therapy can effectively treat sexual dysfunctions by addressing the four stages of the human sexual response cycle described by Masters and Johnson: excitement, plateau, orgasm, and resolution. Common female sexual dysfunctions addressed in therapy include hypoactive sexual desire disorder, female sexual arousal disorder, orgasmic disorder, and painful intercourse disorders. Common male dysfunctions treated include premature ejaculation, erectile dysfunction, and hypoactive sexual desire disorder. Treatment involves addressing psychological, medical, relationship, and intimacy factors that may be contributing to the sexual issues.