Yellow-Green Semen Stains: Causes and Concerns

Dried semen on underwear appears yellowish-green?

Hello, Doctor Hsu.
Recently, I noticed that the semen that dried on my underwear is yellow-green in color.
Is there a problem? The semen I produce myself is normal white, but the dried semen on my underwear is yellow-green.
There was one time when I felt the sensation of ejaculation while I was doing it myself, and due to the desire for pleasure, I had multiple quick releases and held back, and in the end, the semen flowed out, seeming like it wasn't fully expelled.
Is there an injury to my penis, or could this be a sign of a sexually transmitted infection? Please help me with this.
Thank you.

123, 20~29 year old female. Ask Date: 2009/04/26

Dr. Xu Weikai reply Urology

Hello, semen is normally white to yellowish when ejaculated.
In the environment, it can change color due to the effects of bacteria, fungi, and other factors.
This is not related to sexually transmitted infections and does not seem to be associated with injury.
If there are any unclear points, feel free to ask again for further discussion and research.
Department of Urology, Taitung Hospital, Ministry of Health and Welfare, Taiwan.
Director, Hsu Wei-Kai.
Response.

Reply Date: 2009/04/26

More Info

The observation of yellow-green stains in your semen can be concerning, and it's understandable that you would want to seek clarification on this issue. There are several potential causes for the discoloration of semen, and while it may not always indicate a serious problem, it is important to consider various factors.

1. Normal Variations: Semen can naturally vary in color and consistency due to several factors, including hydration levels, diet, and frequency of ejaculation. If you are experiencing normal white semen during ejaculation, the yellow-green color in dried stains may not be a cause for alarm. It could simply be a result of the drying process or residual substances in the semen.

2. Infection: One of the more serious concerns associated with a change in semen color is the possibility of an infection. Conditions such as prostatitis (inflammation of the prostate) or sexually transmitted infections (STIs) can lead to changes in semen color. If you have any accompanying symptoms, such as pain during urination, unusual discharge, or discomfort in the pelvic area, it would be wise to consult a healthcare professional for further evaluation.

3. Semen Composition: The yellow-green color could also be due to the presence of certain substances in the semen. For example, the presence of pus cells, which can occur in cases of infection, may give the semen a yellowish tint. Additionally, dietary factors, such as the consumption of certain foods or supplements, can also influence the color of semen.

4. Ejaculation Technique: You mentioned that you experienced a sensation of ejaculation but felt that you may not have fully ejaculated. This could lead to a mixture of old and new semen, which might affect the color. If you are frequently engaging in practices that involve delayed ejaculation or multiple quick ejaculations, it could potentially lead to changes in the consistency and appearance of your semen.

5. Potential Injury: While it is less likely that you have sustained an injury to your penis that would cause a change in semen color, any trauma or irritation could lead to inflammation, which might affect the appearance of your semen. If you notice any swelling, bruising, or persistent pain, it is essential to seek medical attention.

In conclusion, while yellow-green stains in dried semen may not necessarily indicate a serious issue, it is crucial to monitor your symptoms. If the discoloration persists, or if you experience any additional symptoms such as pain, discomfort, or changes in urination, it is advisable to consult a healthcare provider. They can perform a thorough examination and, if necessary, conduct tests to rule out infections or other underlying conditions. Maintaining open communication with your healthcare provider about any concerns you have regarding your sexual health is essential for your overall well-being.

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