Is It Normal for Penis Size to Change Before and After Erection?

Q: Is It Normal for Penis Size to Change Before and After Erection?

Hello： In response to your question, as long as you can achieve an erection and engage in sexual intercourse smoothly, it is considered normal.

Is it normal?

Hello doctor, I would like to ask a question: Is it normal for there to be a difference of more than ten centimeters between the size before and after an erection?

A羣, 20~29 year old female. Ask Date: 2007/06/26

Dr. Cai Zongyou reply Urology

Hello: In response to your question, as long as you can achieve an erection and engage in sexual intercourse smoothly, it is considered normal.

Reply Date: 2007/06/26

More Info

It is completely normal for the size of the penis to change significantly before and after an erection. The penis undergoes various physiological changes during the process of arousal and erection, which can lead to a noticeable increase in size.
When a man becomes sexually aroused, the brain sends signals to the blood vessels in the penis, causing them to dilate. This increased blood flow fills the erectile tissues (corpora cavernosa) within the penis, leading to an erection. The average increase in size can vary widely among individuals, and it is not uncommon for some men to experience a size difference of several centimeters between the flaccid (non-erect) and erect states.

Typically, the average flaccid penis size is around 9 to 10 cm (approximately 3.5 to 4 inches), while the average erect size is about 13 to 15 cm (approximately 5 to 6 inches). However, some men may experience a much larger difference, and a change of 10 cm or more is not unheard of. Factors such as genetics, hormonal levels, and overall health can influence both the flaccid and erect sizes.

It is important to note that penis size can vary significantly from person to person, and there is no "normal" size that applies universally. Concerns about size can often stem from societal pressures or misconceptions, but it is essential to remember that sexual function and satisfaction are not solely determined by size.
If you are experiencing any discomfort, pain, or other unusual symptoms related to erections or sexual function, it is advisable to consult a healthcare professional. They can provide personalized advice and address any concerns you may have. Additionally, if there are any significant changes in your sexual health or function, it is always a good idea to seek medical advice to rule out any underlying conditions.

In summary, a significant change in penis size before and after an erection is normal and varies among individuals. If you have any concerns about your sexual health or function, do not hesitate to reach out to a healthcare provider for guidance and support.

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