Yeast Infection Symptoms,
Causes, and Treatment

Yeast infection symptoms, what causes them, over-the-counter vs prescription treatment, and when to see a provider.

What Causes Yeast Infections

Yeast infections are caused by an overgrowth of Candida, a fungus that normally lives in small amounts on the skin and inside the body (the mouth, throat, gut, and vagina). Under healthy conditions, the vaginal microbiome keeps a careful balance between helpful bacteria (mainly Lactobacillus species) and small amounts of yeast. When that balance is disrupted, Candida can multiply quickly and cause infection.

The most common species behind vaginal yeast infections is Candida albicans, which accounts for about 85 to 90 percent of cases. Non-albicans species such as Candida glabrata are becoming more common and can be more resistant to standard antifungal treatments.

Anything that shifts the vaginal pH, reduces helpful bacteria, or weakens the immune system can trigger yeast overgrowth. Common triggers include:

• Antibiotic use (which kills protective Lactobacillus along with harmful bacteria)
• Hormonal changes from pregnancy or birth control pills
• High blood sugar in uncontrolled diabetes
• A weakened immune system

Yeast infections are not considered sexually transmitted infections, though they can sometimes pass between partners.

Common Symptoms

Yeast infection symptoms can range from mild to severe and typically develop gradually over a few days. Recognizing these symptoms early allows you to begin treatment sooner and avoid prolonged discomfort.

The hallmark symptoms of a vaginal yeast infection include:

• Intense itching and irritation: Persistent itching of the vulva and vaginal opening is the most common complaint
• Thick, white discharge: Often described as having a cottage cheese-like consistency, usually without a strong odor
• Redness and swelling: The vulvar tissue may appear red, swollen, and inflamed
• Burning sensation: Particularly noticeable during urination or intercourse
• Soreness and pain: General discomfort in the vaginal area, especially with prolonged sitting or walking
• Vaginal rash: Small cracks or tiny sores on the vulvar skin in severe cases

These symptoms overlap with other vaginal conditions, including bacterial vaginosis, trichomoniasis, and contact dermatitis. If you are unsure of your diagnosis or have never had a yeast infection before, see a provider for accurate identification.

Risk Factors

Nearly 75 percent of women will experience at least one yeast infection in their lifetime, and about 40 to 45 percent will have two or more episodes. While any woman can develop a yeast infection, certain factors significantly increase your risk.

Key risk factors include:

• Antibiotic use: Broad-spectrum antibiotics kill Lactobacillus bacteria that normally keep Candida in check, making post-antibiotic yeast infections very common
• Hormonal changes: Pregnancy, hormonal contraceptives, and hormone replacement therapy increase estrogen levels, which promote Candida growth
• Uncontrolled diabetes: Elevated blood sugar provides extra fuel for yeast and impairs immune defenses in vaginal tissue
• Weakened immune system: Conditions such as HIV or immunosuppressive medications reduce the body's ability to control fungal populations
• Tight or non-breathable clothing: Synthetic underwear, tight jeans, and wet swimsuits create the warm, moist environment that yeast thrives in
• Douching and scented products: Vaginal douches, scented soaps, and perfumed hygiene products disrupt the natural vaginal pH and microbiome
• High-sugar diet: Diets rich in refined sugars and simple carbohydrates may promote yeast overgrowth in susceptible individuals

Over-the-Counter Treatment Options

For uncomplicated yeast infections, over-the-counter (OTC) antifungal treatments work well and are widely available. These medications belong to the azole class of antifungals. They work by disrupting the cell membrane of Candida, which kills the fungus and relieves symptoms.

Common OTC options include:

• Miconazole (Monistat): Available as vaginal suppositories or cream in 1-day, 3-day, and 7-day formulations. The 7-day course tends to cause less local irritation
• Clotrimazole (Gyne-Lotrimin): Available as vaginal cream or suppositories, typically in 3-day or 7-day regimens
• Tioconazole (Vagistat-1): A single-dose vaginal ointment applied at bedtime

When using OTC treatments, finish the full course even if symptoms improve before the medication is done. Stopping early can let surviving yeast regrow and cause a recurrence. Most women notice symptoms improving within 2 to 3 days, with full resolution by the end of the treatment course. If symptoms do not improve within 3 days, or have not fully resolved within 7 days, contact a healthcare provider.

When You Need a Prescription

While OTC treatments work well for many women, certain situations call for prescription-strength medication. The most commonly prescribed treatment is oral fluconazole (Diflucan), a single-dose antifungal pill that treats the infection systemically. Many patients prefer it over topical treatments for its convenience and effectiveness.

A prescription may be necessary when:

• OTC treatment has failed to resolve symptoms after a full course
• Symptoms are moderate to severe, with extensive redness, swelling, or skin cracking
• You are pregnant and need provider-guided treatment selection, as not all antifungals are safe during pregnancy
• You have a non-albicans Candida species, which may require longer treatment courses or different antifungal agents
• You have recurrent infections (four or more per year) that require a suppressive maintenance regimen
• You have diabetes, a weakened immune system, or other conditions that complicate treatment

A telehealth provider can evaluate your symptoms, review your history, and prescribe fluconazole or an alternative antifungal sent directly to your pharmacy, often on the same day as your visit.

Recurrent Yeast Infections

Recurrent vulvovaginal candidiasis (RVVC) is defined as four or more symptomatic yeast infections within a 12-month period. It affects about 5 to 8 percent of women. RVVC can hurt quality of life and cause ongoing discomfort, anxiety, and frustration with repeated treatment cycles.

Treatment for recurrent yeast infections usually has two phases. The first is an induction phase to clear the current infection. This often uses a longer course of fluconazole (every 72 hours for three doses). The second is a maintenance phase. A lower dose of fluconazole is taken once weekly for six months to suppress yeast regrowth. Studies show maintenance therapy cuts recurrence rates to about 10 percent during the treatment period.

If you experience recurrent infections, your provider may also recommend:

• Vaginal culture to identify the specific Candida species and guide targeted treatment
• Screening for underlying conditions such as undiagnosed diabetes or immune deficiency
• Reviewing medications that may be contributing, including antibiotics and hormonal contraceptives
• Lifestyle modifications such as wearing breathable cotton underwear, avoiding douching, and reducing dietary sugar intake

When to See a Provider

While many yeast infections can be self-treated, there are important situations where professional evaluation is essential to ensure you receive the correct diagnosis and appropriate treatment.

See a provider if:

• This is your first yeast infection and you are unsure of the diagnosis
• Symptoms do not improve after completing a full course of OTC antifungal treatment
• You have four or more infections in a year
• You are pregnant or breastfeeding
• Your discharge has an unusual color (yellow, green, or gray) or a strong, fishy odor, which may indicate bacterial vaginosis or another condition
• You have abdominal or pelvic pain, fever, or chills, which could signal a more serious infection
• You have diabetes, HIV, or take immunosuppressive medications

Self-treating with OTC antifungals when the actual cause is bacterial vaginosis, trichomoniasis, or another condition can delay proper treatment. It can also let the true infection get worse. A provider can tell these conditions apart based on your symptoms and history, then prescribe the correct medication.

Getting Treatment Online

Yeast infections are one of the most common conditions treated through telehealth, and for good reason. The diagnosis relies heavily on a detailed symptom history rather than physical examination, making it well suited for virtual evaluation. Many women prefer the privacy and convenience of discussing these symptoms from home rather than scheduling an in-person appointment.

During a telehealth visit for yeast infection, your provider will:

• Ask about your current symptoms, their severity, and when they started
• Review your history of yeast infections and previous treatments
• Screen for symptoms that suggest a different diagnosis requiring alternative treatment
• Discuss risk factors and strategies to prevent future infections
• Prescribe oral fluconazole or recommend the most appropriate OTC regimen, sent directly to your preferred pharmacy

At InnoCre Telehealth, we provide compassionate, judgment-free women's health care for patients in Maryland, Washington, and Delaware. Same-day appointments are available, and prescriptions can often be ready for pickup within hours of your visit. You do not need to endure days of discomfort waiting for an office opening when effective treatment is a virtual visit away.

Frequently Asked Questions