There are people who, upon hearing the word "vaginitis," repeatedly get tested and take medication, then get tested and take medication again. In the clinic, a considerable number of them are in fact not vaginitis but cases where a change within the normal range was mistaken for abnormal. So I always begin with the same talk: you have to know what is normal to know what is abnormal. The mere fact that there is discharge is not a disease; rather, a pattern that has changed from usual and accompanying symptoms become the signals.
Discharge is a normal function by which the vagina protects itself
Discharge, that is, vaginal discharge, is a normal product the vagina makes to protect itself. It washes away germs that come in from outside, keeps the mucous membrane moist, and helps hold the internal environment steady. Just as the amount of saliva that pools in the mouth differs from person to person, the amount of normal discharge also varies greatly between individuals.
The point that even healthy women can experience discharge, a faint odor, and mild irritation has long been reported (Anderson 2004). What matters is not "the amount is large" but "has it changed from usual." The perspective that the accompanying symptoms appearing together with a change from normal discharge are the real clue is a part that has been steadily emphasized in clinical practice (Eschenbach 2000).
The mere fact that there is discharge cannot be taken to mean vaginitis that must be treated. The key is not the amount but the pattern and accompanying symptoms.
Normal discharge is acidic, and Lactobacillus protects it
Inside a healthy vagina, lactic-acid bacteria called Lactobacillus are dominantly established. These bacteria make lactic acid to keep the inside of the vagina weakly acidic, and this acidic environment suppresses the overgrowth of other bacteria. The US CDC explains bacterial vaginosis as a state in which these protective Lactobacilli decrease and anaerobic bacteria increase (CDC, STI Treatment Guidelines 2021).
So the vagina is not completely odorless. A faint acidic smell can be normal. The NHS also guides that normal discharge is clear or creamy, or pale yellow, and that the amount and consistency can vary by period (NHS, Vaginal discharge). Organized by color, it is as follows.
- Clear, white, creamy: mostly normal
- Pale yellow or beige: if there are no accompanying symptoms, mostly within the normal range
- Deep yellow that suddenly increases with odor or itching: evaluation needed
- Green or gray: evaluation needed
Normal also changes according to the cycle and hormones
The biggest reason discharge changes with each cycle is the change in levels of the two hormones, estrogen and progesterone. When asymptomatic healthy women were compared and observed at three time points—menstruation, before ovulation, and after ovulation—it was reported that the mucous membrane, discharge, and flora differ significantly at each time point (Eschenbach 2000). Around ovulation the mucus becomes the most abundant and the change is clear, so you can feel it yourself.
The pattern can also differ depending on the contraceptive method, such as taking a contraceptive pill or using an intrauterine device. So when you get the feeling "this month is different from usual," that does not immediately mean vaginitis. You first have to examine whether it is a change within your own cycle. If your menstrual cycle is irregular, it is good to also refer to the Guide for when an irregular menstrual cycle concerns you.
내 분비물이 정상인지 채팅으로 물어보기The standard of "normal" differs at each life stage
The standard of normal also differs by age. In adolescence, just as menarche begins and periods are irregular, it is before the hormonal pattern is settled, so the discharge pattern also appears in various ways. Since hygiene habits are formed in this period, building correct habits is recommended.
In the reproductive years, cyclic discharge changes appear clearly, and mucus becomes the most abundant around ovulation. The menopausal transition refers to roughly the mid-40s to early 50s, when the cycle starts to become irregular; when the cycle wavers, the discharge pattern also becomes irregular along with it. In this period, the pattern can differ from before, so recording becomes important.
In menopause, on the contrary, the amount of discharge can decrease. At this time, rather than "a lot of discharge," the discomfort of dryness, stinging, and pain during intercourse often comes to the fore. This can be related to vaginal atrophy and is an area worth looking at separately in Causes and management of vaginal dryness. Since vaginitis can occur more easily when there is atrophy, I recommend seeing a doctor if it is uncomfortable.
Distinguishing normal from warning signs at a glance
When self-checking, do not look at color alone; you must look together at the change compared to usual and the accompanying symptoms. If I organize into a table the criteria I look at together with patients in the clinic, it is as follows.
| Item | Generally normal | A sign that needs evaluation |
|---|---|---|
| Color | Clear, white, creamy, pale yellow | Deep yellow, green, gray, bloody |
| Amount | Variation within my usual baseline | Suddenly increased a lot compared to usual |
| Odor | Faint acidic smell | Fishy smell, strong foul odor |
| Accompanying symptoms | None | Itching, burning, pain, rash |
| Timing | Matches cyclic change | Persists regardless of the cycle |
The amount varies so much between individuals that we do not judge vaginitis by "a lot" alone. Was I originally on the heavy side, did it suddenly increase, did itching or pain arise together. Looking at these three together is the key. If itching recurs, the Guide for when vulvar itching is frequent is also a reference.
Mistaking normal for inflammation and washing excessively is rather harmful
The most common self-treatment is internal vaginal washing, that is, douching. However, the vagina is an organ that cleans itself, so there is no need to wash the inside separately. The NHS clearly advises not to wash the inside of the vagina with douches and the like (NHS, Vaginal discharge). The CDC likewise reports that douching can reduce protective Lactobacillus and raise the risk of bacterial vaginosis (CDC, STI Treatment Guidelines 2021).
If you mistake normal discharge for abnormal and wash excessively or repeat self-medication, the protective flora and acidic environment collapse, rather becoming an environment in which problems arise easily. Moreover, vulvar and vaginal symptoms are nonspecific, so the accuracy of self-diagnosis is low. ACOG does not recommend self-diagnosis of common vaginitis and advises that accurate evaluation requires examination and testing (ACOG Practice Bulletin 215, 2020). For the same reason, if symptoms recur, rather than arbitrary self-treatment, accurately confirming the cause with a vaginitis test is the faster route.
So what should you remember
In summary, two things. First, even healthy women can experience discharge, a faint odor, and mild irritation, and that alone is not something to be treated. Second, what matters is not the amount but the pattern that has changed from usual and the accompanying symptoms. Knowing the breadth of normal can reduce unnecessary anxiety and excessive self-treatment.
However, if it corresponds to the "warning signs" in the table, or if color·odor·itching·pain continue regardless of the cycle, then evaluation is needed. If you are unsure whether your discharge is within the normal range or in a state that needs testing, please try writing down your symptoms and consulting comfortably by chat. Since there can be individual differences, when judgment is difficult, confirming through a medical visit is the safest.
Written by: Lee Dong-hee Director · Obstetrics and Gynecology Specialist · View doctor profile
First published March 6, 2026 · Last reviewed May 30, 2026
References: ACOG Practice Bulletin No. 215 Vaginitis in Nonpregnant Patients (2020), CDC STI Treatment Guidelines (2021), NHS Vaginal discharge, Eschenbach (2000), Anderson (2004)
This article is intended to provide general health information and does not replace individual diagnosis or treatment. If you have symptoms, please consult through a medical visit.