Is Clear Sticky Fluid on the Glans After Sleep Normal? - Urology

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Upon waking up, there may be a sticky discharge from the glans penis?


Doctor, I often wake up with clear, colorless mucus on the glans (specifically at the urethral opening).
This sometimes happens not only at night but also after waking from a nap.
Is this normal?

Niming, 10~19 year old female. Ask Date: 2015/01/19

Dr. Xu Weikai reply Urology


Hello, it is most likely a case of nocturnal emission.
Of course, there could be other issues as well.
If there are any unclear points, feel free to ask again, and we can discuss and research further.
Online responses should only be taken as references; if necessary, it is important to seek medical attention at a healthcare facility.
This message is from Dr.
Hsu Wei-Kai, Head of Urology, Taitung Hospital, Ministry of Health and Welfare.

Reply Date: 2015/01/19

More Info


Experiencing clear sticky fluid on the glans after waking up is a phenomenon that can be quite common and is generally considered normal. This fluid is often a natural secretion from the urethra, which can occur for several reasons.
Firstly, the clear sticky fluid you are noticing is likely a combination of pre-ejaculatory fluid, also known as pre-cum, and possibly some residual urine. Pre-ejaculatory fluid is produced by the Cowper's glands (bulbourethral glands) and serves to lubricate the urethra and neutralize any acidity in the urethra before ejaculation. This fluid can sometimes be present even when there is no sexual arousal or activity, especially during sleep when the body is in a relaxed state.

Additionally, it is important to note that during sleep, particularly during REM (Rapid Eye Movement) sleep, the body can experience various physiological changes, including increased secretion of fluids. This can lead to the accumulation of clear fluid at the urethral opening upon waking. It is not uncommon for men to notice this fluid after waking from sleep or even after a nap, as you have described.

While this occurrence is typically benign, there are a few factors to consider. If the fluid has a strong odor, is discolored, or is accompanied by other symptoms such as itching, burning, or discomfort, it may indicate an underlying issue such as a urinary tract infection (UTI) or urethritis (inflammation of the urethra). In such cases, it would be advisable to seek medical attention for further evaluation.

Moreover, if you notice a significant increase in the amount of fluid, or if it becomes a source of concern for you, it is always a good idea to consult with a healthcare professional. They can provide a thorough examination and determine if any further tests are necessary to rule out any potential issues.

In summary, the presence of clear sticky fluid on the glans after waking is generally normal and can be attributed to natural bodily functions. However, if you experience any unusual changes or additional symptoms, it is important to consult a healthcare provider to ensure your health and well-being. Regular check-ups and open communication with your doctor can help address any concerns you may have regarding your reproductive and urinary health.

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