11 November 2025 2 min read

STI on the tongue | symptoms and oral STD tests

Lauren Dobischok

Lauren Dobischok

Medical Product Manager

Verified and up to date on 11 November 2025
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.

Frequently asked questions

How reliable are the tests?

Our tests are analysed in an ISO 15189 accredited laboratory with the same equipment and protocols used by hospitals and GPs. The accuracy is comparable to a venous blood draw.

How quickly will I receive my results?

After receipt of your sample at the lab, you will receive your results within 1-2 working days in your personal, secure portal.

Are the tests really anonymous?

Yes, 100%. The packaging is plain, containing no indication of the contents. Your test is registered with an anonymous code. Only you have access to the results.

Sources

  1. 1
    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

About the author

Lauren Dobischok

Lauren Dobischok

Medical Product Manager

Lauren is a health scientist and science communicator currently living in the Netherlands. Originally from Canada, she completed a Research Master’s in Health Sciences at the Netherlands Institute of Health Sciences at Erasmus University Rotterdam (NIHES) with a specialisation in epidemiology. Prior to her master’s degree, she completed a Bachelor’s degree in Health Sciences at Simon Fraser University. With a background in public health, her goal is to create accurate scientific content that is easy to understand and empowers people to make informed decisions. Within Homed-IQ, Lauren works as a Product Developer and Content Lead, working closely with physicians and scientists on medical devices for Homed-IQ’s new products and written communications.

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