Cottage cheese discharge is a thick, white, clumpy vaginal discharge that is the hallmark sign of a vaginal yeast infection. It gets its name because the texture closely resembles cottage cheese, with white clumps that may stick to the vaginal walls. The discharge is caused by an overgrowth of Candida, a type of fungus that normally lives in the vagina in small amounts.
Why the Discharge Looks This Way
When Candida fungi overgrow, they penetrate the surface lining of the vagina and trigger an inflammatory response. Your immune system sends white blood cells to fight the infection, and the combination of these immune cells, dead tissue, and fungal overgrowth produces the thick, white discharge that clings to vaginal walls. This is different from normal vaginal discharge, which is typically clear or slightly milky and thin.
One detail that surprises many people: yeast infections don’t usually produce a noticeable odor. If your discharge has a strong or fishy smell, the cause is likely something else entirely.
Other Symptoms That Come With It
The discharge rarely shows up alone. Most women with a yeast infection also experience intense itching around the vulva and vaginal opening. Burning is common too, especially during urination or sex. The vulva and surrounding skin may look red, swollen, or irritated, and in more severe cases, small scratches or raw patches appear from scratching.
Symptoms can range from mild (slight itching with minimal discharge) to severe (significant swelling, cracking skin, and heavy discharge). Not every yeast infection looks the same, and some produce watery discharge rather than the classic cottage cheese texture.
How It Differs From Other Vaginal Infections
Three common vaginal infections produce noticeably different types of discharge, and telling them apart can help you figure out what you’re dealing with:
- Yeast infection: Thick, white, clumpy discharge with no odor. Intense itching is the dominant symptom.
- Bacterial vaginosis (BV): Thin, grayish-white discharge that coats the vagina evenly and has a fishy smell, especially after sex.
- Trichomoniasis: Thin, greenish-yellow discharge that may look frothy or pus-like, often with irritation and a noticeable odor.
A useful clue is vaginal pH. The normal vaginal pH sits between 4.0 and 4.5, and yeast infections typically don’t change it. BV and trichomoniasis both raise vaginal pH above 4.5. Over-the-counter pH test strips can help narrow things down, though they can’t confirm a diagnosis on their own.
What Causes Yeast Overgrowth
Candida lives in the vagina naturally, kept in check by beneficial Lactobacillus bacteria that produce acid and maintain the vagina’s low pH. Problems start when something disrupts that balance and lets Candida multiply unchecked.
The single biggest trigger is antibiotics. Antibiotics kill Lactobacillus along with the bacteria they’re targeting, which removes the natural defense against fungal overgrowth. This is why many women develop a yeast infection during or shortly after a course of antibiotics, whether the antibiotics were taken orally or applied vaginally.
Other common risk factors include pregnancy (high estrogen and elevated sugar levels in vaginal secretions create a favorable environment for yeast), diabetes (particularly when blood sugar is poorly controlled), hormonal contraceptives, hormone replacement therapy, and immunosuppressive conditions or medications like corticosteroids. Tight, non-breathable clothing and staying in wet swimwear can also contribute by trapping moisture.
How It’s Diagnosed
If you’ve had a yeast infection before and recognize the symptoms, an over-the-counter treatment is a reasonable first step. But if you’re experiencing these symptoms for the first time, if treatment doesn’t work, or if symptoms keep coming back, a clinical evaluation helps rule out other causes.
Diagnosis is straightforward. A healthcare provider takes a small sample of the discharge and examines it under a microscope, looking for the branching threads and budding cells characteristic of Candida. The sample needs to be examined within about 10 minutes for accurate results. If the microscope exam doesn’t show yeast but symptoms strongly suggest it, the sample can be sent for a culture, which is more sensitive.
Treatment and What to Expect
Most yeast infections respond well to antifungal treatments available over the counter. These come as creams, suppositories, or ointments applied inside the vagina, with treatment courses ranging from one to seven days depending on the product. Shorter courses use higher concentrations of the active ingredient.
For women who prefer a single-dose option, a prescription oral antifungal is available as one 150 mg pill. Both approaches are effective, and the choice usually comes down to personal preference. Symptoms typically start improving within a couple of days, but it’s worth completing the full course even if you feel better sooner.
When Yeast Infections Keep Returning
About 5% of women experience recurrent yeast infections, defined as three or more episodes in a single year. Recurrent infections can be frustrating and may require a different treatment approach, such as a longer initial course followed by a maintenance regimen to prevent flare-ups.
Probiotics show promise for reducing recurrence. Lactobacillus bacteria help maintain the vagina’s acidic environment by producing lactic acid and hydrogen peroxide, which suppress Candida growth. In one randomized trial, women who took a probiotic supplement had a recurrence rate of just 7.2%, compared to 35.5% in the placebo group. The strains with the strongest evidence are Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14, typically taken as a daily capsule for four to six weeks.
Beyond probiotics, basic habits help keep the vaginal environment stable: wearing breathable cotton underwear, avoiding douching or heavily fragranced products near the vulva, changing out of wet clothing promptly, and managing blood sugar if you have diabetes. None of these are guarantees, but they reduce the conditions that let Candida thrive.