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  2. Nocturnal penile tumescence - Wikipedia

    en.wikipedia.org/wiki/Nocturnal_penile_tumescence

    In a study published in 1972, [11] during puberty, the average tumescence time per night was 159 min; average REM sleep time was 137 min. Average simultaneous REM sleep and penile tumescence per night was 102 min. Study subjects averaged 6.85 tumescence episodes/night, and, of these, 5.15 occurred during a REM sleep period. Tumescence episodes ...

  3. Erection - Wikipedia

    en.wikipedia.org/wiki/Erection

    An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal, sexual attraction or libido, although erections can also be spontaneous.

  4. Penile pain - Wikipedia

    en.wikipedia.org/wiki/Penile_pain

    Penile pain refers to pain in the penis of human or otherwise. Common causes. Penile injury; Circumcision; Penile fracture; Priapism; Phimosis; Peyronie's disease;

  5. Injury to the Penis . Trauma to the perineum, the area between the anus and scrotum, is one of the most common causes of penile numbness, Dr. Levine says. ... Diabetes typically causes pain and ...

  6. Proctalgia fugax - Wikipedia

    en.wikipedia.org/wiki/Proctalgia_fugax

    It most often occurs in the middle of the night [3] and lasts from seconds to minutes; [4] pain and aching lasting twenty minutes or longer would likely be diagnosed instead as levator ani syndrome. In a study published in 2007 involving 1809 patients, the attacks occurred in the daytime (33 percent) as well as at night (33 percent) and the ...

  7. Hard flaccid syndrome - Wikipedia

    en.wikipedia.org/wiki/Hard_flaccid_syndrome

    A flaccid penis that remains in a firm, semi-rigid state in the absence of sexual arousal: Usual onset: Typically following a traumatic event (an injury to the erect penis, blunt perineal trauma, cauda equina) though can also appear without an apparent cause: Causes: Excessive sympathetic activity in the erectile smooth muscle tissue: Risk factors

  8. Odynorgasmia - Wikipedia

    en.wikipedia.org/wiki/Odynorgasmia

    Ejaculations that hurt can range in intensity from mild discomfort to unbearable agony. Everywhere in the pudendal territory, including the penis, scrotum, and perineal/perianal area, is susceptible to it. [1] Usually starting right before or during ejaculation, the pain usually lasts for two to twenty-four hours.

  9. Penile injury - Wikipedia

    en.wikipedia.org/wiki/Penile_injury

    Other symptoms include severe pain, loss of erection, and swelling. [5] Symptoms of urethral injury include hematuria, blood at the meatus, and dysuria. [1] If left untreated, complications result in 28–53% of cases; these include permanent curvature of the penis, fistula, urethral diverticulum, priapism, and erectile dysfunction. [5]