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Mycoplasma genitalium

Mycoplasma genitalium

This fact sheet is also available in PDF format.

Mycoplasma genitalium (M. genitalium) is a sexually transmitted bacteria.

Signs and symptoms

People with M. genitalium often do not experience any symptoms.

Symptoms that may occur in women:

  • Burning sensation when urinating
  • Vaginal itching
  • Painful intercourse
  • Abnormal vaginal discharge
  • Abnormal bleeding between periods
  • Abdominal pain

Symptoms that may occur in men:

  • Burning or painful sensation when urinating
  • Inflammation or redness of the penis and foreskin
  • Inflammation of the lining of the rectum
  • Abnormal discharge

Symptoms typically appear within 1-3 weeks after being infected.


  • M. genitalium is caught from sex with an infected person
  • Genital-to-genital contact


  • Use condoms/ barriers consistently and correctly
  • Abstain from sexual intercourse until treatment is complete
  • Get an infected partner tested and treated


  • Seek medical care to discuss testing and treatment
  • Treatment may include antibiotics

If not treated

  • Increases your risk for pelvic inflammatory disease (PID) Increases your risk for Epididymitis (inflammation of the epididymis)
  • If someone has other STD's such as HIV,
  • M. genitalium can make it more likely to pass on other infections.

If you have M. genitalium

  • Seek medical care
  • Take medication as instructed by a medical professional
  • Refrain from intercourse until you and your partner have completed treatment
  • Speak to a provider if you've used macrolide-based antibiotics previously to treat infections. This may impact the drugs effectiveness to treat M. genitalium.