9 the Ejaculatory Disorders

James H. Barada Ejaculation, representing the physiologic means of semen and sperm delivery for reproduction has, until recently, received relatively little attention in the area of male sexual health. Yet, ejaculatory dysfunction, or male orgasmic disorder (MOD), is one of the most common male sexual disorders. The spectrum of MOD extends from premature ejaculation through various manifestations of diminished ejaculation: varying delays in ejaculatory latency to a complete inability to ejaculate, anejaculation, retrograde ejaculation, as well as reductions in volume, force, and sensation of ejaculation. This chapter uses a variety of conventional names describing male orgasmic or ejaculatory disorders. Although all investigators agree on what is being named, they do not necessarily agree on the names themselves. The sexual response cycle can usefully be conceptualized as having four interactive, nonlinear phases: desire, arousal, orgasm, and resolution. The sexual dysfunctions are disruptions of any of these phases [1]. The normal