<unk>  <unk> , also known as rapid ejaculation,<unk>  climax, early ejaculation, or by the Latin term ejaculatio praecox, is the most common sexual problem in men, affecting 25%-40% of men. It is characterized by a lack of voluntary control over ejaculation.
Masters and Johnson stated that a man suffers from<unk>  if he ejaculates before his partner achieves orgasm in more than fiftypercent of his sexual encounters. Other sex researchers have defined<unk>  as occurring if the man ejaculates within two minutes or less of<unk> netration; however, a survey by Alfred Kinsey in the 1950s demonstrated that three quarters of men ejaculated within two minutes
of<unk> netration in over half of their sexual encounters. Today, most sex therapists understand<unk>  as occurring when a lack of ejaculatory control interferes with sexual or emotional well-being in one or both partners. Masters and Johnson recommended the use of the Lateral coital position to help alleviate<unk> .
Most men experience<unk>  at least once in their lives. Often adolescents and young men experience<unk> " ejaculation during their first sexual encounters, but eventually learn ejaculatory control. Because there is great variability in both how long it takes men to ejaculate and how long both partners want sex to last, researchers have begun to form a quantitative definition of<unk> . Current evidence supports an average intravaginal ejaculation latency time (IELT) of six and a half minutes in 18-30 year olds.  If the disorder is defined as an IELT<unk> rcentile below 2.5, then<unk>  could be suggested by an IELT of less than about one and a half minutes. Nevertheless, it is well accepted that men with IELTs below 1.5 minutes could be "happy" with their<unk> rformance and do not report a lack of control and therefore do not suffer from<unk> . On the other hand, a man with 2 minutes IELT could present with<unk> rception of poor control over his ejaculation, distressed about his condition, has interpersonal difficulties and therefore be diagnosed with<unk> .
Scientists have long suspected a genetic link to certain forms of<unk> . In one study, ninety-one<unk> rcent of men who suffered from lifelong<unk>  also had a first-relative with lifelong<unk> . Other researchers have noted that men who suffer from<unk>  have a faster neurological response in the<unk> lvic muscles. Simple exercises commonly suggested by sex therapists can significantly improve ejaculatory control for men with<unk>  caused by neurological factors[citation needed]. Often, these men may benefit from anti-anxiety medication or selective serotonin reuptake inhibitors (SSRIs), such as sertraline or paroxetine, as these slow down ejaculation times. Some men prefer using anaesthetic creams; however, these creams may also deaden sensations in the man's partner, and are not generally recommended by sex therapists.
Psychological factors also commonly contribute to<unk> . While men sometimes underestimate the relationship between sexual<unk> rformance and emotional well-being,<unk>  can be caused by temporary depression, stress over financial matters, unrealistic expectations about<unk> rformance, a history of sexual repression, or an overall lack of confidence. Interpersonal dynamics strongly contribute to sexual function, and<unk>  can be caused by a lack of communication between partners, hurt feelings, or unresolved conflicts that interfere with the ability to achieve emotional intimacy. Neurological<unk>  can also lead to other forms of sexual dysfunction, or intensify the existing problem, by creating<unk> rformance anxiety. In a less pathological context,<unk>  could also be simply caused by extreme arousal.
Some physical illnesses, such as a prostate infection, are also known to induce<unk> . In other instances,<unk>  is caused by a physical injury that affects the nervous system. Certain medications, such as cold medications containing pseudoephedrine, also cause<unk> . Sexual dysfunction is a common symptom of psychiatric afflictions ranging from bipolar disorder to post-traumatic stress disorder. In these cases, it is best to discuss the issues openly with a physician.
Today it is believed that the neurotransmitor serotonin (5HT) has a central role in modulating ejaculation. Several animal studies have demonstrated its inhibitory effect on ejaculation modulated through the PGI system in the brain. Therefore, it is<unk> rceived that low level of serotonin in the synaptic cleft in these specific areas in the brain could cause<unk> . This theory is further supported by the proven effectiveness of SSRIs, which increase serotonin level in the synapse, in treating<unk> .
Premature ejaculation
Delayed ejaculation
Dyspareunia
Pelvic floor dysfunction
Abnormalities in micturition
Urinary hesitancy
Penis pain
Anorgasmia