Red Spot Near Penis After Unprotected Sex: Could It Be an STD? - Urology

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Unprotected vaginal intercourse?


The situation involves a deep red, slightly square-shaped large spot near the glans of the penis.
Three weeks ago, there was unprotected vaginal intercourse with a sex worker.
There is no fever, but there is fatigue, dizziness, and difficulty breathing.
Could this be related to HIV or another sexually transmitted infection? The spot is not painful, itchy, and there is no fluid discharge.
Thank you, doctor.

Zhan, 20~29 year old female. Ask Date: 2016/02/18

Dr. Xu Weikai reply Urology


Zhan: Hello, it's difficult to determine.
Many diseases can present with such lesions.
I recommend seeking medical examination.
If there are any unclear points, feel free to ask again, and we can discuss and research further.
Answers found online should only be used as a reference; if necessary, you should visit a medical institution for treatment.
This response is from Dr.
Hsu Wei-kai, Director of the Urology Department at Taitung Hospital, Ministry of Health and Welfare, who cares about your well-being.

Reply Date: 2016/02/18

More Info


It is understandable to be concerned about the appearance of a red spot near the penis after engaging in unprotected sexual intercourse, especially with a sex worker. Based on your description, there are several factors to consider regarding the possibility of a sexually transmitted disease (STD) or other infections.

Firstly, the red spot you are observing could be a result of various conditions. It may be a benign skin reaction, such as irritation or an allergic response to a substance (like soap or lubricant), or it could be a sign of a sexually transmitted infection. Common STDs that can cause lesions or spots include herpes, syphilis, and human papillomavirus (HPV). However, the absence of pain, itching, or discharge is somewhat reassuring, as many STDs typically present with more pronounced symptoms.

Given that you had unprotected vaginal intercourse, there is a risk of contracting STDs, including HIV. However, the symptoms you describe—fatigue, dizziness, and difficulty breathing—are not typical early signs of HIV infection. Acute HIV infection often presents with flu-like symptoms, such as fever, sore throat, and swollen lymph nodes, rather than isolated skin lesions. Nevertheless, it is crucial to understand that HIV can be asymptomatic for a period, and the only way to confirm your status is through testing.

Considering the timeline of three weeks since your exposure, it is advisable to get tested for STDs, including HIV. The window period for HIV testing can vary, but many tests can detect the virus within 2 to 4 weeks after exposure. If you are concerned about other STDs, it would be prudent to request a comprehensive STD panel, which typically includes tests for syphilis, gonorrhea, chlamydia, and herpes, among others.

In addition to testing, it is essential to monitor your symptoms. If the red spot changes in appearance, becomes painful, or if you develop additional symptoms such as fever or unusual discharge, seek medical attention promptly. A healthcare provider can perform a physical examination and may recommend topical treatments or further investigations based on their findings.

Furthermore, it is important to practice safe sex in the future to reduce the risk of STDs. Using condoms consistently and correctly can significantly lower the chances of transmission of infections during sexual activity.

In summary, while the red spot near your penis could be due to various benign causes, it is essential to get tested for STDs, including HIV, to rule out any infections. Early detection and treatment are crucial for managing STDs effectively. If you experience any worsening symptoms or new developments, do not hesitate to seek medical care. Your health and peace of mind are paramount.

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