Green discharge: Why Color Changes Need Assessment

Green vaginal discharge should be assessed by a clinician or sexual health service. It can occur with an infection, but color alone cannot identify which one. You do not have to wait for pain, a strong smell, or a larger amount before seeking advice.
Avoid diagnosing from a color chart
Trichomoniasis is one possible cause. This infection is caused by a parasite and can produce increased discharge, irritation, or discomfort when urinating. However, discharge may have several different appearances, and many people with trichomoniasis notice no symptoms at all.
Testing is needed to confirm the diagnosis. Other causes of vaginal symptoms may require different treatment. Our vaginal swab guide explains why the test requested matters as much as collecting a sample.
Give the service a clear history
Mention when the change began, other symptoms, pregnancy possibility, any recent treatment, and sexual contact relevant to testing. If symptoms disappeared and then returned, include both dates rather than assuming the first episode was unrelated.
The date symptoms started does not necessarily reveal when an infection was acquired. Trichomoniasis can remain present for a long time without being recognized. A result should guide care, not be used on its own to draw conclusions about a relationship.
Let the diagnosis guide treatment and partner advice
Confirmed trichomoniasis requires prescribed oral medicine. Current sexual partners also need treatment, and sex should wait until everyone has completed treatment and symptoms have resolved. The clinician will explain the exact instructions and follow up, including repeat testing when appropriate.
Do not apply that plan to every cause of discharge. Yeast infections, bacterial vaginosis, and other conditions have different management. Ask what your particular result means before sharing medicines or treating a partner yourself.
Recognize symptoms that change the urgency
If discharge comes with pelvic pain, seek prompt care. Severe pain, faintness, heavy bleeding, or being very unwell needs emergency assessment. Our guide to discharge with pelvic pain explains why a swab alone may not be enough.
While arranging assessment, avoid sex and do not douche or use internal deodorants to hide the change. Bring the name of any product or medicine already used. If symptoms persist after treatment, return for review rather than assuming a remaining color change tells you which treatment to repeat.


