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Published on: 8/20/2026
Grey vaginal discharge is often a sign of bacterial vaginosis (BV), a common condition caused by an imbalance of the natural bacteria in the vagina. Other possible causes include sexually transmitted infections such as trichomoniasis or chlamydia. Grey discharge is frequently accompanied by a fishy odor, itching, or irritation, and typically requires medical evaluation to identify the cause and appropriate treatment.
Because grey discharge can point to several different conditions—each with its own treatment path—guessing isn't your best next step. Take a free, instant, online symptom check to better understand what may be causing your symptoms and get clear guidance on what to do next.
Reviewed for medical accuracy: 07/15/2026
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Normally, the vagina makes clear or white discharge to keep itself clean. When the discharge turns grey, it can mean that the mix of tiny germs in your body has changed. This change is sometimes seen in bacterial vaginosis, a common infection where the good bacteria, called lactobacilli, drop in number and other bacteria take over. This imbalance makes the discharge look grey and may come with a mild smell or irritation. In some cases, grey discharge might also be linked to other infections or inflammation that affect the vaginal area. It is important to keep track of any other symptoms you might have, like itching, burning, or changes in odor. If you notice these changes, you can use a free symptom checker to help identify potential causes and determine whether you should seek medical care. A healthcare provider can order simple tests to find out exactly what is happening and decide on the best treatment. Keeping an eye on your body's changes helps you stay healthy and comfortable.
(References)
Bishop GB. Vaginal Discharge. In: Walker HK, Hall WD, Hurst JW, editors. Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition. Boston: Butterworths; 1990. Chapter 172. Available from: https://www.ncbi.nlm.nih.gov/books/NBK281/
Amrin SS, Lakshmi GJ. Vaginal discharge: The diagnostic enigma. Indian J Sex Transm Dis AIDS. 2021 Jan-Jun;42(1):38-45. doi: 10.4103/ijstd.IJSTD_92_18. Epub 2020 Jul 31. PMID: 34765936; PMCID: PMC8579582.
Murewanhema G, Moyo E, Mhango M, Chitungo I, Moyo P, Musuka G, Dzobo M, Dzinamarira T. Abnormal vaginal discharge among women of reproductive age in sub-Saharan Africa: the need for a paradigm shift from a syndromic approach to specific pathogen identification and directed treatment. IJID Reg. 2022 Oct 29;5:165-168. doi: 10.1016/j.ijregi.2022.10.006. PMID: 36467508; PMCID: PMC9713322.
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