Syphilis: Symptoms and Concerns After Oral and Protected Sex - Urology

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Syphilis infection


Dear Doctor, I had unprotected oral sex and protected vaginal intercourse 20 days ago.
Now, I have small red spots appearing on the coronal sulcus, with two to three spots appearing at a time.
They last for about two days before disappearing, but then new ones appear, and this has been happening for 3 to 5 days.
Could this be a sign of syphilis? During the protected intercourse, I also experienced some tearing of the skin on the neck of the penis.

Tiāntiān, 30~39 year old female. Ask Date: 2023/03/31

Dr. Du Shixi reply Urology


Hello: If there has been unsafe sexual behavior, it is recommended to seek medical attention for a blood test.
The manifestations of syphilis can vary widely, and it cannot be determined solely by skin changes.
Wishing you good health.

Reply Date: 2023/03/31

More Info


When it comes to concerns about sexually transmitted infections (STIs) like syphilis, it's essential to understand the symptoms, transmission routes, and the importance of timely testing. Based on your description, you engaged in unprotected oral sex followed by protected intercourse, and now you're noticing small red bumps in the coronal sulcus (the groove just behind the head of the penis).
Firstly, let's clarify the symptoms associated with syphilis. The primary stage of syphilis typically presents as a painless sore or ulcer, known as a chancre, at the site of infection. This sore usually appears about three weeks after exposure. However, in your case, the red bumps you're experiencing may not necessarily indicate syphilis, especially if they are small, transient, and resolve quickly.
The fact that you had unprotected oral sex does pose a risk for various STIs, including syphilis, gonorrhea, and herpes. However, the symptoms you're describing—small red bumps that appear and disappear—could also be related to other conditions, such as irritation, allergic reactions, or even folliculitis (inflammation of hair follicles).
It's important to note that syphilis is primarily transmitted through direct contact with a syphilitic sore, which can occur during oral, anal, or vaginal sex. While the risk of transmission through oral sex is lower compared to vaginal or anal sex, it is still significant, especially if there are sores or cuts in the mouth or on the genital area.

Given your symptoms, it is advisable to seek medical attention promptly. A healthcare provider can perform a thorough examination and recommend appropriate tests, including a VDRL or RPR test for syphilis, and possibly a TPHA test for confirmation. These tests can help determine if you have syphilis or another STI.

In addition to syphilis, other STIs can also cause similar symptoms. For instance, herpes can present with small red bumps or blisters, and gonorrhea can cause urethral irritation and discharge. Therefore, comprehensive STI testing is crucial to rule out these infections.

As for the concern about the protected sex following the unprotected oral sex, using a condom significantly reduces the risk of transmitting STIs during vaginal or anal intercourse. However, it does not eliminate the risk entirely, especially if there was any contact with infected bodily fluids before the condom was applied.

In summary, while your symptoms may not definitively indicate syphilis, they warrant further investigation. It is crucial to consult a healthcare provider who can assess your symptoms, conduct the necessary tests, and provide appropriate treatment if needed. Remember, early detection and treatment of STIs are vital for your health and the health of your partners. Always practice safe sex and consider regular STI screenings, especially after new sexual encounters.

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