Yeast Infection: Symptoms, Causes, Treatment, Prevention

This guide covers the symptoms, causes, treatment, and prevention of vaginal yeast infection. It covers key signs, causes, tests, medicines, risk reduction, and medical care.

Vulvovaginal candidiasis, or VVC, means a vaginal yeast infection¹. It starts when *Candida* yeast grows too much in the vagina and vulva¹.

*Candida* can live in the body without causing problems. An infection occurs when excess growth causes symptoms and swelling^1,2.

Many cases respond well to antifungal medicine. Still, symptoms can look like those of other health problems.

VVC is a common fungal infection of the vagina and vulva¹. Almost half of women will have at least one episode.

Finding yeast does not always mean an infection is present. Some people carry vaginal *Candida* without symptoms or signs.

Doctors diagnose infection when yeast is present with signs or symptoms. A positive culture alone does not prove that yeast caused the symptoms.

Doctors group the condition as uncomplicated or complicated. Uncomplicated cases are mild or moderate and happen rarely. They are also likely to involve *Candida albicans*.

Complicated cases include severe, repeat, or non-*albicans* infections. Diabetes and weak immune defenses also place an infection in this group. These cases need different tests or treatment plans.

Most healthy people with uncomplicated VVC have no clear trigger. Others have a health issue or medicine that raises their risk^1,2.

No single symptom can confirm VVC. Several vaginal conditions can cause the same signs.

Common signs can affect comfort in several ways:

Dysuria means pain or burning during urination. With VVC, the burning may affect the outer tissues⁶. Yeast infections do not commonly cause urinary tract infections¹.

If discharge occurs, it may look thick, white, and curd-like^1,8. A clinician may see white discharge stuck to vaginal tissue.

Some people have little or no discharge. Therefore, the amount of discharge cannot confirm or exclude VVC.

Discharge also occurs with other vaginal infections. Testing may be needed if the cause remains unclear.

Some signs need medical review instead of routine self-treatment. They may suggest another cause or affect the safe use of medicine.

Contact a clinician in the following situations:

These signs do not confirm another diagnosis. However, they do make self-diagnosis less reliable.

Many types of *Candida* live naturally in the vagina and elsewhere. They often cause no health problems^1,5.

Changes in vaginal acid levels, hormones, or normal microbes may promote yeast growth¹. The infection begins when this growth causes symptoms and swelling^1,2.

The yeast may enter surface tissue and cause swelling. This response may cause itching, burning, soreness, or discharge.

A test may find yeast when no symptoms are present. In that case, treatment is not advised based on the test alone.

Several medicines and health changes can raise the risk. Still, many healthy people have no clear trigger.

Known risk factors include the following health issues and medicines:

Use antibiotics and corticosteroids only as directed. Tell the prescriber if yeast symptoms start during treatment.

Do not change a prescribed drug on your own. Ask the prescriber about symptoms and the next safe step.

VVC is not usually passed through sex. Studies have not shown that it is commonly a sexually passed infection.

If symptoms occur, they do not prove that a partner passed an infection. Routine partner treatment is not advised for uncomplicated VVC.

Sex may play a role in some cases. However, VVC is not formally classed as a sexually passed infection¹.

Good hygiene does not require harsh or scented products. Avoiding scented products may reduce irritation and infection risk¹⁰.

Keep the area clean and dry. Breathable clothes may also help lower the risk.

Itching, soreness, painful sex, burning, and discharge are not unique to VVC. Other causes of vaginal swelling can produce similar signs.

Other causes include bacterial vaginosis, gonorrhea, and chlamydia. Testing can help tell these conditions apart.

Even a past diagnosis does not make self-diagnosis fully reliable. Unneeded treatment may delay care for another cause.

Testing is useful when symptoms are new, unclear, or different. It is also important when treatment does not work.

A clinician may first review symptoms and risk factors. These may include pregnancy, diabetes, drug use, or weak immune defenses^1,2,8.

During an examination, the clinician may check for these findings:

Vaginal pH testing measures how acidic the vagina is. VVC is linked with a pH below 4.5.

Vaginal fluid may go on a slide for microscope checks. The sample may be mixed with saline or potassium hydroxide.

Potassium hydroxide helps make yeast easier to see. The clinician looks for yeast cells or related structures.

If microscopy is negative, a fungal culture may be useful. This test can find a broad group of harmful yeasts. Yeast culture remains the reference test for VVC.

Some clinicians use molecular tests, such as PCR tests. PCR looks for genetic material from the yeast. Many yeast PCR tests do not have FDA clearance.

Speak with a clinician before self-treatment in several situations. Proper testing may prevent the wrong treatment or a delay in care.

Seek medical advice in the following circumstances:

Testing can show whether yeast is present. It can also help rule out other causes of vaginal symptoms.

Antifungal medicines treat vaginal candidiasis. Many uncomplicated cases respond to vaginal azole medicines.

Clotrimazole and miconazole are common over-the-counter options. They come as vaginal creams or suppositories. A suppository is a solid dose placed inside the vagina.

Treatment schedules vary by medicine and strength. Some products use one dose. Others require three or seven days of treatment.

Use the exact dose and schedule on the label⁷. Do not use more medicine than directed⁷.

Short azole treatment can work for uncomplicated infections. Among people who finish treatment, 80% to 90% get relief and negative cultures.

These steps can support safe use of vaginal medicine:

Some vaginal creams and suppositories contain oil. Oil-based products may weaken latex condoms and diaphragms.

Clotrimazole may also weaken these birth control devices⁷. Check both medicine and condom labels for product guidance.

A clinician may prescribe one 150-milligram fluconazole pill for uncomplicated VVC. Fluconazole is an antifungal medicine taken by mouth.

Treatment choice depends on the infection type and its severity. Overall health also affects the treatment plan.

Severe, repeat, or non-*albicans* infections need special care. The same applies when drug resistance may be present¹.

A clinician may order a culture to identify the yeast. If symptoms return, more fluconazole doses may be prescribed.

Other prescribed options may include boric acid, nystatin, or flucytosine. These treatments require guidance from a clinician.

Pregnancy raises the risk of vaginal yeast infection¹. If pregnancy is possible, tell a clinician before using clotrimazole⁷.

Also tell the clinician if pregnancy starts during treatment. Do not assume the same plan is right for every case.

Evidence does not support probiotics for treating active VVC. Evidence also does not support homeopathic products for this purpose.

Discuss home remedies with a healthcare professional before using them¹. The wrong product may delay care for another cause.

Clotrimazole may increase local burning, itching, or irritation⁷. Stop using it if a rash or hives develop⁷. Then call your doctor immediately⁷.

Also stop and call a clinician for fever or foul-smelling discharge⁷. Nausea, vomiting, chills, or stomach pain also need medical advice⁷.

Routine follow-up is not needed after symptoms resolve. However, lasting or repeat symptoms need another assessment.

No step prevents every yeast infection. However, some daily habits may lower the risk^3,10.

These simple habits can help keep the area dry:

These habits do not replace medical care. If symptoms are unclear, testing may still be needed.

Antibiotics may disturb the normal mix of vaginal microbes¹. This change may let yeast grow too much¹.

Corticosteroids can also increase the risk of candidiasis. These drugs can reduce immune defenses.

Use antibiotics and corticosteroids only as prescribed. Take them exactly as directed.

Tell the prescriber if yeast symptoms begin during treatment. Do not stop a needed medicine without first discussing the change; however, if you develop serious symptoms while using clotrimazole, stop clotrimazole and call your doctor immediately.

Repeat infections may involve a non-*albicans* yeast. They may also need more testing or different treatment.

Avoid repeated self-treatment when symptoms keep returning. A clinician may use a culture to identify the yeast type.

Routine treatment of a partner without symptoms is not advised. Uncomplicated VVC is not usually gained through sex.

A confirmed diagnosis can guide the next treatment plan. It may also prevent delays in finding another cause.

This yeast guide can help you make safer care choices. It may also help you avoid needless or delayed self-treatment.

Antifungal creams, suppositories, and oral medicine treat many infections. The best choice depends on the diagnosis and severity.

If symptoms are unclear, severe, lasting, or recurrent, seek medical care. Testing can confirm yeast and help check for other causes.