A yeast infection typically causes thick, white discharge that looks like cottage cheese, along with intense itching and redness around the vagina and vulva. About 75% of women will experience at least one yeast infection in their lifetime, and up to 45% will have two or more. Knowing exactly what to look for helps you distinguish a yeast infection from other conditions that can cause similar discomfort.
What the Discharge Looks Like
The most recognizable sign of a yeast infection is the discharge. It’s typically thick, white, and clumpy, often compared to cottage cheese in both appearance and texture. In some cases, though, the discharge is more watery. The volume can range from barely noticeable to heavy enough that you see it on your underwear throughout the day.
One of the most useful clues is smell, or rather, the lack of it. Yeast infection discharge usually has no odor or only a very faint, bread-like smell. This sets it apart from bacterial vaginosis, which produces a thin, grayish discharge with a noticeable fishy odor that gets stronger after your period or after sex. Trichomoniasis, a sexually transmitted infection, can also cause a fishy smell but tends to produce a thinner, yellowish or greenish discharge. If your discharge has a strong odor, you’re likely dealing with something other than yeast.
How It Feels
Itching is the hallmark symptom, and it can range from mildly annoying to genuinely unbearable. It tends to be worst on the vulva (the outer tissue surrounding the vaginal opening) and can extend to the inner thighs. Many people describe it as a persistent, deep itch that doesn’t go away with scratching and sometimes gets worse at night or after a warm shower.
Burning is the other major sensation. You may notice it as a general soreness around the vulva, but it often sharpens during two specific moments: urination and sex. Urine passing over inflamed skin creates a stinging sensation, and friction during intercourse can make the burning significantly worse. Some people also feel a sense of swelling or fullness around the vaginal opening, even without touching the area.
Visible Skin Changes
Beyond discharge, a yeast infection produces visible changes to the vulvar skin. Redness and swelling are common, giving the tissue a puffy, irritated appearance. On lighter skin tones, the redness is usually obvious. On Black or brown skin, redness can be harder to spot visually, so swelling, texture changes, and how the area feels are more reliable indicators.
In more severe cases, the irritation can progress to small cuts, cracks, or fissures in the vulvar skin. These tiny tears happen because inflamed, swollen tissue becomes fragile, especially if you’ve been scratching. They can sting sharply when they come into contact with urine, soap, or moisture. If you notice cracks or sores developing, that’s a sign the infection is on the more severe end and may need a stronger or longer course of treatment than a standard over-the-counter option.
What’s Happening Inside Your Body
A yeast called Candida normally lives in the vagina in small amounts without causing problems. A yeast infection develops when something disrupts that balance and allows Candida to multiply. The fungus shifts from a harmless, rounded form into a more aggressive shape with branching filaments that can actually penetrate the surface cells lining the vagina. This invasion triggers your immune system to send inflammatory cells to the area, which is what causes the redness, swelling, and heat you feel. The fungus also produces enzymes and a toxin that directly damage tissue, intensifying the irritation.
Common triggers for this overgrowth include antibiotics (which kill off the bacteria that normally keep yeast in check), hormonal changes from pregnancy or birth control, a weakened immune system, and high blood sugar levels.
What It Looks Like on a Penis
Yeast infections aren’t exclusive to people with vaginas. On the penis, a yeast infection (called balanitis) is more common in uncircumcised men and looks quite different from the vaginal version. Signs include moist skin on the penis, areas of shiny white skin, and a thick white substance collecting in the folds under the foreskin. You may also notice a change in skin color, along with itching or a burning sensation on the penile skin. The discomfort tends to be milder than a vaginal yeast infection but can worsen without treatment.
How to Tell It Apart From Other Infections
Several vaginal conditions share overlapping symptoms, which is why about half of people who think they have a yeast infection actually have something else. Here’s how the three most common causes of vaginitis compare:
- Yeast infection: Thick, white, clumpy discharge with little or no odor. Intense itching and burning. Vulvar redness and swelling.
- Bacterial vaginosis: Thin, grayish discharge that’s heavier in volume and has a fishy smell, especially after sex or your period. Itching is usually milder or absent. Triggered by shifts in vaginal pH from semen, menstrual blood, or douching.
- Trichomoniasis: Thin, frothy discharge that can be clear, white, yellowish, or greenish with a fishy odor. Causes itching, burning, redness, and discomfort when urinating. This is a sexually transmitted infection and requires a different type of treatment.
The biggest differentiators are odor and discharge texture. If it smells fishy, it’s probably not yeast. If the discharge is thin or colored, that also points away from a yeast infection.
Mild vs. Severe Symptoms
Not all yeast infections feel the same. A mild case might involve light itching, a small amount of discharge, and slight redness that clears up within a few days of using an over-the-counter antifungal cream or suppository. Many people feel noticeable relief within the first two to three days of treatment.
A severe yeast infection is a different experience. The itching can be relentless and intense enough to wake you at night. Swelling may make it uncomfortable to sit or walk. The skin of the vulva can crack and develop small sores from the combination of inflammation and scratching. Severe infections are more likely if you’re pregnant, have diabetes, have a weakened immune system, or get yeast infections frequently (four or more times a year). These cases often need a longer treatment course or a prescription-strength option rather than what’s available over the counter.
If your symptoms don’t improve after a few days of treatment, or if they come back within a couple of months, it’s worth getting tested to confirm that yeast is actually the cause. A simple swab test can identify the specific organism and rule out bacterial vaginosis or trichomoniasis, both of which require completely different treatments.