形成外科・泌尿器科・性病科
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更新日:2024/08/09
公開日:2023/10/17

Anatomy of the Penis
First, let's briefly explain the male reproductive organ. The two parts particularly relevant to our topic are:
Glans
The glans is located at the very tip of the penis. Typically, it is rounded in shape and can be a different color than the rest of the penis. Especially during sexual arousal, it tends to become reddish.
Nerve endings: The glans contains numerous nerve endings, making it very sensitive. These nerve endings play a role in sensing touch, pressure, temperature, and other stimuli. It is one of the primary sites for feeling sexual arousal. Blood flow: The glans is surrounded by numerous small blood vessels, which expand during sexual arousal, causing the glans to become erect.
Frenulum
The frenulum is a thin band of tissue located on the underside of the glans, connecting it to the shaft of the penis.
If the frenulum is short, it can cause pain when pulled during an erection. This condition is called "frenulum breve".
Nerve endings: Like the glans, the frenulum is also rich in nerve endings, making it a sensitive area. In particular, it plays a role in amplifying sexual pleasure in conjunction with sensations from the glans. Function: The frenulum also controls the movement of the foreskin. During an erection, it helps naturally expose the glans by retracting the foreskin.
These areas are known to play key roles in forming a man's sexual pleasure. Consequently, any abnormalities or issues in these areas can impact sexual pleasure.
Sensitivity and Sexual Response
Our sexual responses are complex, but one of the main factors causing ejaculation is stimulation. The more sensitive an area, the less stimulation is needed to elicit a sexual response. Therefore, areas where nerves are concentrated, like the glans and frenulum, are highly responsive to sexual stimuli.
Causes of Sensitivity Differences in Men
Phimosis
Overview: Phimosis refers to a condition where the foreskin, which covers the tip of the penis (the glans), is tighter than usual and does not naturally retract during an erection, or is difficult to retract. Impact: In phimosis, since the glans is always covered by the foreskin, it is less exposed to direct external stimuli. As a result, when the glans is touched directly without the foreskin, it may feel more sensitive than usual. Over time, this can make one overly sensitive to sexual stimuli.
Infections and Inflammations
Overview: Balanitis refers to inflammation of the glans. It is often caused by bacteria or fungi like Candida. Other causes include sexually transmitted infections, allergies, or reactions to irritants. Impact: When balanitis or other infections occur, the skin of the glans becomes red and swollen, and may be accompanied by itching or pain. These symptoms can increase sensitivity to normal stimuli. Treatment often alleviates these symptoms, but if left untreated, they can become chronic.
Sensitivity differences can also be influenced by individual constitution, genetics, daily habits, and other factors.
Relationship with Premature Ejaculation
Premature ejaculation refers to when a man ejaculates sooner than he or his partner would like.
Considering the sexual responses involving sensitivity, if the glans or frenulum is more sensitive, the threshold of stimulation required for ejaculation may be reached sooner, leading to premature ejaculation.
Solutions and Treatments
If hypersensitivity is the cause of premature ejaculation, the following treatments can be considered:
Glans Enhancement
This involves injecting filler material into the glans to create an inner membrane, strengthening its sensation against external stimuli. This treatment only requires an injection and takes about 10 minutes.
Frenulum Removal
This method involves removing the frenulum. By removing the sensitive frenulum, sensation is enhanced. This procedure can also be done in conjunction with phimosis surgery.
Conclusion
Everyone's body and sensations are unique, and it's essential to understand that there is a tailored solution for each individual. It's crucial to identify the cause and seek appropriate treatment.
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