STI on the tongue | symptoms and oral STD tests

Red dots on the tongue - cause for concern?

Certain STIs can be transmitted through unprotected oral-genital contract and can infect the mouth or throat. Chlamydia gonorrhoea, herpes, syphilis, and HPV are all STIs that can infect the mouth area. Strange feeling on your tongue? Sexually transmitted infections of the tongue are possible. Oral chlamydia or gonorrhoea do not cause sores on the tongue, but can cause a sore throat, difficulty swallowing, and enlarged lymph nodes (CDC, 2024). If you’ve been experiencing any of the above symptoms, see your doctor or a sexual health clinic. If you have had unprotected oral sex or have been warned by a partner that they have an STI, you may want to consider an oral STI test. Homed-IQ’s oral STI test checks for chlamydia and gonorrhoea using a swab sample.

Do you want to check if you have oral chlamydia or gonorrhoea? 

Then do the STI test for Chlamydia and Gonorrhoea.

  • Ordered before 17:00, shipped today
  • Results within 48 hours after arrival at the lab
  • Professional analysis in a medical certified laboratory

Chlamydia in the mouth

Chlamydia can enter the mouth or throat through unprotected oral sex, such as oral sex without a condom or dental dam. Chlamydia infections affecting the throat are less common than infections affecting the genitals. Chlamydia in the throat often does not cause any symptoms.

If symptoms occur,  they may include: sore throat, pain when swallowing, swollen glands in the throat, and fever.

Gonorrhoea in the mouth

Gonorrhoea can also infect the throat through unprotected oral sex. Most people with oral gonorrhoea have little to no symptoms, although the most common symptom is a persistent sore/itchy throat. Other symptoms can include difficulty swallowing, flu-like symptoms, swollen or painful glands, or redness in the throat.

It’s important to note that it is possible for a gonorrhoea test sample from the anus, vagina, or penis to be negative, while you could still have a gonorrhoea infection in the throat.

About STI Risk and Oral Sex | STI. (2024, February 6). CDC. Retrieved November 11, 2025, from https://www.cdc.gov/sti/about/about-sti-risk-and-oral-sex.html

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