Syphilis Risk in Oral and Sexual Relationships - Urology

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Sexually transmitted diseases (STDs) issues?


Hello doctor, my girlfriend and I started dating in November last year, and we have been having sexual intercourse every week since then.
We have only been with each other and always used condoms with withdrawal.
However, in early February, there were a few occasions when she performed oral sex on me without a condom, and I ejaculated in her mouth.
What is the risk of contracting syphilis in this situation?

Hsuan, 20~29 year old female. Ask Date: 2024/05/20

Dr. Du Shixi reply Urology


Hello: To see if your girlfriend originally had syphilis? If not, then there is no chance; if she did, then there is a chance.
Wishing you good health.

Reply Date: 2024/05/20

More Info


When it comes to understanding the risk of syphilis and other sexually transmitted infections (STIs) in oral and sexual relationships, it is essential to consider several factors, including the nature of the sexual activities, the health status of both partners, and the presence of any symptoms.

Syphilis is primarily transmitted through direct contact with syphilitic sores, which can occur in the genital area, anus, or mouth. The risk of transmission through oral sex is generally lower than through vaginal or anal intercourse, but it is not negligible. If your girlfriend has syphilis or has been exposed to someone with syphilis, there is a risk of transmission during oral sex, especially if there are any sores or lesions present in the mouth or throat.

In your case, you mentioned that you and your girlfriend have been in a monogamous relationship and have primarily engaged in protected sex. Using condoms significantly reduces the risk of transmitting STIs, including syphilis, during vaginal or anal intercourse. However, the risk associated with oral sex can be higher if there are any breaks in the skin, such as cuts or sores in the mouth, or if either partner has an active infection.

The fact that your girlfriend performed oral sex on you without a condom and that ejaculation occurred in her mouth does increase the risk of transmission if either of you had an undiagnosed STI at that time. If she had any sores or lesions in her mouth, or if she had been exposed to syphilis, this could further elevate the risk.

It is also important to note that many STIs, including syphilis, can be asymptomatic in the early stages. This means that even if neither of you has visible symptoms, it is still possible to be infected. Regular STI testing is crucial for sexually active individuals, especially if there is a change in partners or if engaging in higher-risk sexual behaviors.

In summary, while the risk of contracting syphilis through oral sex is lower than through other forms of sexual activity, it is not zero. Given your specific situation, it would be wise to consult with a healthcare provider for testing and further evaluation. They can provide personalized advice based on your sexual history and any potential symptoms. Additionally, both partners should consider getting tested for STIs regularly to ensure that any infections are caught early and treated appropriately.

In conclusion, maintaining open communication with your partner about sexual health, practicing safe sex, and undergoing regular STI screenings are essential steps in reducing the risk of syphilis and other sexually transmitted infections. If you have any concerns or symptoms, do not hesitate to seek medical advice.

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