Can Oral Sex Without Ejaculation Transmit STDs? - Urology

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Can oral sex without ejaculation transmit sexually transmitted infections (STIs)?


About a month ago, I performed oral sex on another male, but he did not ejaculate in my mouth, and I did not come into contact with any semen.
Recently, I have noticed several small red spots on my palms, the back of my hands, my calves, and the tops of my feet.
In the past few days, I have also experienced occasional weakness in my limbs.
I would like to know if the likelihood of contracting a sexually transmitted infection (STI) is high in this situation.

Tony, 20~29 year old female. Ask Date: 2021/05/06

Dr. Du Shixi reply Urology


Hello: The following standards can be used to evaluate the risk levels of sexual behaviors:
- Low-risk sexual behaviors: This includes mutual masturbation, mutual rubbing, deep kissing, bondage, protected deep foreplay, oral sex with condoms or dental dams, anal intercourse, and vaginal intercourse.

- Moderate-risk sexual behaviors: This includes withdrawal method (coitus interruptus), sharing sex toys, unprotected deep foreplay, oral sex before ejaculation, and oral sex during menstruation.

- High-risk sexual behaviors: This includes unprotected anal intercourse, vaginal intercourse, oral sex during menstruation, retaining semen in the mouth, sharing needles, syringes, and bleeding during sexual activity.

You are classified as moderate risk and have developed red spots; you should seek medical attention.
Wishing you good health.

Reply Date: 2021/05/06

More Info


Engaging in oral sex can indeed pose a risk for the transmission of sexually transmitted diseases (STDs), even if ejaculation does not occur. While the risk is generally lower compared to vaginal or anal intercourse, it is important to understand that STDs can be transmitted through bodily fluids, skin-to-skin contact, and mucous membranes present in the mouth and throat.

Common STDs that can be transmitted through oral sex include:
1. Human Immunodeficiency Virus (HIV): Although the risk of transmission through oral sex is lower than through anal or vaginal sex, it is still possible, especially if there are cuts or sores in the mouth.

2. Gonorrhea and Chlamydia: These bacterial infections can infect the throat and are transmitted through oral sex. Symptoms may not always be present, which can lead to undiagnosed infections.

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

4. Herpes Simplex Virus (HSV): Oral herpes (typically HSV-1) can be transmitted through oral sex, leading to genital herpes in the partner. Conversely, genital herpes (typically HSV-2) can also infect the oral cavity.

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

Regarding your symptoms of small red spots on your hands, arms, and legs, along with feelings of weakness, it is essential to consider that these could be related to a variety of conditions, not necessarily an STD. However, some STDs can cause systemic symptoms, including rashes or flu-like symptoms. For example, secondary syphilis can present with a rash, and HIV can cause flu-like symptoms during its acute phase.

Given your recent sexual encounter and the appearance of these symptoms, it is advisable to seek medical attention. A healthcare provider can perform appropriate tests to determine if you have contracted an STD and can provide guidance on treatment if necessary. It is also important to inform any sexual partners about potential exposure so they can also get tested.

In summary, while the risk of transmitting STDs through oral sex without ejaculation is lower, it is not zero. The presence of symptoms such as rashes and weakness warrants a professional evaluation to rule out any infections and to ensure your health and the health of your partners. Regular testing and open communication with partners about sexual health are crucial components of responsible sexual behavior.

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