Skip to main content
Most King County offices will be closed on July 4, for Independence Day.  
King County logo

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.

Transmission

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

Prevention

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

Treatment

  • 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.