<prompt> True about Dual sex therapy is?Patient alone is not treatedUses sildenafilIt treats sexual perversionsIt is used for people with dual gender identities  <response>: Patient alone is not treated REF: Kaplan and sadocks synopsis in psychiatry 9th ed p. 700The theoretical basis of dual-sex therapy is the concept of the marital unit or dyad as the object of therapy. In dual-sex therapy, treatment is based on a concept that the couple must be treated when a dysfunctional person is in a relationship. Because both are involved in a sexually distressing situation, both must paicipate in the therapy program. Dual sex therapy aka Master and Johnson therapyTypes:Sensate focusingi Used for impotenceii Focuses on stimulation of organs other than genitals for sexual arousalSqueeze technique or semens techniquei Used for premature ejaculationii Female paner squeezes the coronal ridge at the inevitability of male ejaculation, hence delays ejaculation. 