Yeast Infections: Symptoms, Causes and Treatment Options Explained

If you've ever dealt with that maddening itch, a burning sting when you pee and thick white discharge, you're far from alone. Up to three out of four women will have a vaginal yeast infection at some point. Most are treated with an antifungal medicine, either an over-the-counter cream or suppository used for one to seven days, or a single prescription pill. If it's your first one, you're pregnant, or it keeps coming back, check in with a doctor before treating.

Yeast infections are rarely serious, but they can make everyday life, sleep and intimacy uncomfortable. The good news is that they usually clear up quickly with the right treatment. Here's what's happening in your body, how to recognize an infection, and what actually helps.

What is a yeast infection?

Your vagina is home to a small, harmless amount of yeast called Candida. It lives alongside friendly bacteria, mainly lactobacilli, that keep the environment slightly acidic and in balance. Think of it like a well-tended garden: as long as the good plants thrive, weeds can't take over.

When that balance is disturbed, Candida can multiply quickly and irritate the delicate tissue of the vagina and vulva. That overgrowth is a yeast infection, also called vaginal candidiasis.

What causes it, and who is more likely to get one?

Anything that upsets the vaginal balance can open the door. Common triggers include:

• Antibiotics, which can wipe out protective bacteria along with harmful ones
• Pregnancy, when higher estrogen levels make yeast easier to grow
• Hormonal birth control or hormone therapy with higher estrogen doses
• Diabetes, especially when blood sugar runs high
• A weakened immune system
• Warm, damp conditions, such as tight leggings or sitting in a wet swimsuit
• Douching and scented products, which disturb the natural balance

A yeast infection isn't considered a sexually transmitted infection, although sex can sometimes trigger symptoms.

Signs and symptoms to look for

Symptoms range from mild to intense. You may notice:

• Itching and irritation in and around the vagina
• Burning, especially when urinating or during sex
• Redness, swelling or small cracks on the vulva
• Thick, white, odorless discharge that looks a bit like cottage cheese
• Sometimes a thinner, watery discharge

Some women have only mild itching, while others have symptoms strong enough to disturb their sleep.

Is it a yeast infection or something else?

Several conditions can look similar. A strong fishy odor, for example, points more toward bacterial vaginosis (BV), while frothy yellow-green discharge can be a sign of trichomoniasis, a sexually transmitted infection. Using the wrong treatment can delay relief. Our guide to yeast infection vs. BV explains the differences in detail.

Can a yeast infection go away on its own?

A very mild infection sometimes settles without treatment, but most need an antifungal to clear fully. Waiting it out often means days of unnecessary discomfort, and scratching can irritate the skin further. Treating early is usually the faster, kinder option for your body.

Treatment options that work

1. Over-the-counter antifungals. Creams, ointments and vaginal suppositories with ingredients such as miconazole or clotrimazole come in one-, three- and seven-day courses. Shorter courses use a stronger dose, but all work similarly. Finish the full course even if you feel better sooner.
2. Prescription oral medicine. A doctor may prescribe a single-dose antifungal pill. For more severe symptoms, a second dose a few days later may be recommended.
3. Longer treatment for recurring infections. If you have four or more infections a year, your doctor may suggest a longer first course followed by a maintenance plan over several months.
4. Options for resistant yeast. Some less common types of yeast don't respond to standard treatment. Your doctor can test for these and recommend another approach.

Most women feel better within a few days. If symptoms haven't cleared after finishing treatment, check back with your doctor.

If you're pregnant: always talk with your doctor or midwife first. Topical treatments are usually preferred during pregnancy, and some oral medicines aren't recommended.

Home remedies: what the evidence says

• Probiotics and yogurt. Some studies suggest they may help some women, especially with recurring infections, but the evidence is mixed and they don't replace antifungal treatment.
• Tea tree oil, garlic or apple cider vinegar. These can irritate sensitive skin and haven't been shown to treat infections reliably. Don't apply them inside the vagina.
• Boric acid. Doctors sometimes recommend it for stubborn types of yeast. Use it only under medical guidance, never by mouth and never during pregnancy.

Why it's worth treating properly

Left alone or treated half-way, a yeast infection can drag on, cause painful cracks in the skin and make sex uncomfortable. Repeated infections can also wear down your confidence and your quality of life. Getting the right diagnosis and finishing treatment helps you feel like yourself again sooner.

When to see a doctor

• It's your first time having these symptoms
• You're pregnant or trying to conceive
• Over-the-counter treatment hasn't helped
• Symptoms return within two months, or you have four or more infections a year
• You have fever, pelvic pain, sores or a strong odor

Frequent infections can sometimes be linked to other factors, such as blood sugar. Read more in our article on recurring vaginal infections.

Everyday habits to keep it from coming back

• Choose breathable cotton underwear and avoid very tight clothing.
• Change out of wet swimsuits and sweaty workout clothes promptly.
• Skip douches and scented feminine products. Warm water and a gentle, unscented cleanser on the outside are enough.
• Wipe from front to back.
• Take antibiotics only when prescribed, and ask your doctor what to do if you tend to get yeast infections afterward.
• Keep blood sugar in a healthy range if you have diabetes.

Supporting your feminine wellness

Treatment clears the infection, and everyday care helps your body stay comfortable. Alongside the habits above and your doctor's advice, some women choose AGO Eva. It supports blood nourishment and menstrual regulation, helps improve female hormone balance, and helps reduce the risk of menstrual disorders, period pain and abnormal discharge, as part of a broader care routine. It does not replace medical treatment.