Risks of Unprotected Oral Sex: STDs and Safety - Urology

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Regarding unprotected oral sex?


Hello, doctor.
A few days ago, I impulsively engaged in sexual activity with a sex worker.
The only act was unprotected oral sex.
I would like to ask if this could lead to a sexually transmitted infection (STI)? If so, what are the possible infections? What is the risk level of contracting them?

Wu, 20~29 year old female. Ask Date: 2017/12/23

Dr. Du Shixi reply Urology


Hello: The premise is that if a sex worker has a sexually transmitted infection (STI), you are at risk.
If you have small wounds in the area, the risk increases further.
As for which STIs, possibilities include urethritis, syphilis, HIV, herpes, and genital warts, among others.
Wishing you good health, and please practice safe sex.

Reply Date: 2017/12/23

More Info


Engaging in unprotected oral sex does carry certain risks, particularly when it comes to sexually transmitted diseases (STDs). While the risk of transmission through oral sex is generally lower compared to vaginal or anal intercourse, it is not negligible. Understanding these risks is crucial for making informed decisions about sexual health.

First, let’s discuss the types of STDs that can be transmitted through oral sex. Common STDs that can be spread this way include:
1. Gonorrhea: This bacterial infection can infect the throat (pharyngeal gonorrhea) and is often asymptomatic, making it easy to spread unknowingly.


2. Chlamydia: Similar to gonorrhea, chlamydia can also infect the throat, although it is less common. Symptoms may not always be present, which adds to the risk of transmission.

3. Syphilis: This bacterial infection can be transmitted through direct contact with syphilis sores, which may be present in the genital area or mouth.

4. Herpes Simplex Virus (HSV): Oral herpes (typically HSV-1) can be transmitted through oral sex, especially if there are active sores. Additionally, genital herpes (typically HSV-2) can also be transmitted through oral sex.

5. Human Immunodeficiency Virus (HIV): While the risk of HIV transmission through oral sex is significantly lower than through anal or vaginal sex, it is still possible, especially if there are cuts or sores in the mouth or throat.

6. Human Papillomavirus (HPV): Certain strains of HPV can be transmitted through oral sex and are associated with oropharyngeal cancers.

Now, regarding your specific situation of having unprotected oral sex with a sex worker, it is important to consider a few factors:
- Health Status: If both parties are free from STDs, the risk of transmission is lower. However, it is essential to note that many STDs can be asymptomatic, meaning one may not be aware of an infection.

- Oral Health: If you have any cuts, sores, or bleeding gums in your mouth, this can increase the risk of transmission. Blood can serve as a vector for many infections, including HIV.

- Frequency of Testing: Regular testing for STDs is crucial, especially if you engage in sexual activities with multiple partners or have unprotected sex. If you are concerned about potential exposure, it is advisable to get tested for STDs, even if you do not exhibit symptoms.

- Preventive Measures: To reduce the risk of STDs, consider using barriers such as condoms or dental dams during oral sex. These can significantly lower the risk of transmission.

In conclusion, while the risk of contracting an STD from unprotected oral sex is lower than from other forms of sexual activity, it is not zero. It is essential to be aware of the potential risks and to take preventive measures to protect your sexual health. If you have concerns about potential exposure, it is advisable to consult a healthcare professional for testing and guidance. Regular check-ups and open communication with partners about sexual health are key components of maintaining a healthy sexual lifestyle.

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