The clinical manifestations of ejaculation dysfunction usually include that ejaculation cannot be, retrograde ejaculation, premature ejaculation, nocturnal emission, and too slow ejaculation.
Sexual intercourse does not ejaculate or ejaculation, and is more common among men (second only to impotence).Sexual intercourse and not ejaculation are also one of the reasons for men's infertility, and can often be reduced and impotence. If it is not resolved for a long time, it will cause emotional discord between husband and wife and family.
At present, the precise stimulation factors and mechanisms of ejaculation have not been fully clear.Preliminary studies have confirmed that the hypothalamus plays a main role. The dopamine energy system in the front of the hypothalamus promotes ejaculation, while the 5 -hydroxylidin energy system suppresses ejaculation.The internal urethral opening when ejaculation and ejaculation are closed by the sympathetic nerve, especially (controlled by A-adrenaline can be controlled.
Regarding the classification of non -ejaculation and naming many scholars, many scholars have not obtained consistent opinions. For example, Masters and Johnson cannot be named ejaculation as psychiatric non -ejaculation; Kaplan uses this to name the functional defects of ejaculation function including organic and mental ejaculation;Steeno, etc., use non -ejaculation to name all sexual intercourse non -ejaculatory disease, including those who lack sexual knowledge, have night -time nocturnal sperm and no ejaculation, mechanical retrograde ejaculation, as well as organic, poisoning and mental natureNo ejaculation, etc.
Bayoumi et al. (1983) believes that non -ejaculation refers to cases without ejaculation after long -term sexual intercourse or even orgasm.Rebellion ejaculation refers to the normal duration of the patient's sexual intercourse, and there is still no normal ejaculation after the passion is over. Sperm and fructose appear in the urine after sexual intercourse.No ejaculation refers to a case without semen discharged after orgasm and ejaculation.
(Editor in charge: Xiao Lei)
