Concerns About Oral Sex and HIV Risk with Mouth Ulcers - Urology

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Oral sex with mouth sores?


Hello doctor, two days ago I performed oral sex on a male partner, which involved taking his penis into my mouth and coming into contact with his prostate.
However, I noticed a small sore on the inside of my lip, and I'm very concerned about the possibility of contracting HIV.
Could you please advise me? Thank you.

CC, 20~29 year old female. Ask Date: 2017/05/06

Dr. Du Shixi reply Urology


Hello: If your partner has HIV, you are at risk, so be cautious.
(The key point is whether your sexual partner has any issues, and also to have the concept of practicing safe sex.)

Reply Date: 2017/05/06

More Info


When it comes to oral sex and the risk of HIV transmission, particularly in the context of having mouth ulcers or sores, it’s important to understand the nuances of how HIV and other sexually transmitted infections (STIs) can be transmitted.
First and foremost, HIV is primarily transmitted through specific bodily fluids, including blood, semen, vaginal fluids, and breast milk. The risk of transmission through oral sex is generally considered to be lower than that of anal or vaginal sex, but it is not zero, especially if there are open sores or ulcers present in the mouth.
In your case, since you mentioned that you performed oral sex on a male partner and ingested some pre-ejaculate fluid while having a small ulcer inside your mouth, there are a few factors to consider:
1. Presence of Ulcers: Open sores or ulcers in the mouth can increase the risk of HIV transmission. This is because the ulcer can provide a direct entry point for the virus into your bloodstream. If your partner is HIV positive, the risk of transmission increases significantly if there is contact with infected bodily fluids.

2. Partner's HIV Status: The risk of transmission is also heavily dependent on your partner's HIV status. If your partner is HIV negative, then the risk of transmission is virtually nonexistent. If they are HIV positive, the risk is higher, especially if they are not on effective antiretroviral therapy (ART) that can reduce their viral load to undetectable levels.

3. Other STIs: It’s also important to consider other sexually transmitted infections. Many STIs can be transmitted through oral sex, and some can cause sores or ulcers in the mouth. If you have concerns about STIs, it may be wise to get tested, especially if you have had multiple partners or unprotected sex.

4. Symptoms and Testing: If you are experiencing symptoms such as fever, sore throat, or swollen lymph nodes, it’s advisable to seek medical attention. While these symptoms can be associated with various infections, they can also be indicative of an acute HIV infection. Testing for HIV is recommended at least 2-4 weeks after potential exposure, but for conclusive results, testing at 3 months is often advised.

5. Precautions for Future Encounters: To reduce the risk of HIV and other STIs in the future, consider using barriers such as condoms or dental dams during oral sex. This can significantly lower the risk of transmission, especially if either partner has any sores or if there is uncertainty about their STI status.

In conclusion, while the risk of HIV transmission through oral sex is lower than through other forms of sexual activity, the presence of mouth ulcers can increase that risk. It is essential to know your partner's HIV status, practice safer sex, and get tested regularly if you are sexually active with multiple partners. If you have any further concerns or symptoms, please consult a healthcare professional for personalized advice and testing.

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