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Box , Jeddah, Saudi Arabia moc. The publisher's final edited version of this article is available at Fertil Steril See other articles in PMC that cite the published article. Abstract Orgasm and ejaculation are two separate physiological processes that are sometimes difficult to distinguish. Orgasm is an intense transient peak sensation of intense pleasure creating an altered state of consciousness associated with reported physical changes. Antegrade ejaculation is a complex physiological process that is composed of two phases emission and expulsion , and is influenced by intricate neurological and hormonal pathways. Despite the many published research projects dealing with the physiology of orgasm and ejaculation, much about this topic is still unknown.
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Excitement phase[ edit ] The excitement phase also known as the arousal phase or initial excitement phase is the first stage of the human sexual response cycle, which occurs as a result of physical or mental erotic stimuli , such as kissing , petting , or viewing erotic images , that leads to sexual arousal. During this stage, the body prepares for sexual intercourse , initially leading to the plateau phase. Flushing physiology Among both sexes, the excitement phase results in an increase in heart rate, breathing rate, and a rise in blood pressure. The sex flush tends to occur more often under warmer conditions and may not appear at all under cooler temperatures. During the female sex flush, pinkish spots develop under the breasts, then spread to the breasts, torso, face, hands, soles of the feet, and possibly over the entire body. During the male sex flush, the coloration of the skin develops less consistently than in the female, but typically starts with the epigastrium upper abdomen , spreads across the chest, then continues to the neck, face, forehead, back, and sometimes, shoulders and forearms. The sex flush typically disappears soon after orgasm occurs, but this may take up to two hours or so and, sometimes, intense sweating will occur simultaneously.
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Human sexual response cycle

Sexual Dysfunction Sexual Dysfunction It is estimated that 20 million men in the United States suffer from sexual dysfunction. Many of these men are not aware of the many options that are available for the treatment of this problem. For a large majority of men who experience sexual dysfunction, the cause is physical rather than psychological. A number of diseases such as high blood pressure, diabetes or even old age may alter sexual functioning.
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Generally speaking, male eroticism and sensuality are viewed in a very simplistic manner, a manner that is entirely centered around pleasing the penis. When the conversation changes to discussing what turns women on and drives them toward orgasm, the tone changes: We understand or at least pretend to the complexity of female sexuality and arousal-particularly in comparison to the perceived simplicity of male sexuality.
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