Vaginal Yeast Infection - Causes, Proper Treatment, and How to Stop Recurring Itching

What is vaginal candidiasis - an infection caused by normal flora

Vaginal candidiasis (vaginal yeast infection) is an infection caused by overgrowth of Candida fungi (yeast) that normally reside in the vagina. Approximately 85-90% of cases are caused by Candida albicans, with the remainder caused by non-albicans species such as Candida glabrata. Candida exists in small amounts in healthy women's vaginas, normally kept in check by lactic acid produced by lactobacilli that maintains vaginal acidity (pH 3.8-4.5). The infection develops when this balance is disrupted. Approximately 75% of women experience at least one episode in their lifetime, and about 40-45% of those will have two or more recurrences.

Characteristic symptoms of vaginal candidiasis

The most characteristic symptom is intense itching of the vulva and vagina. Itching tends to worsen at night and after bathing. Discharge is white and cottage cheese-like (crumbly lumps) or yogurt-like, and typically odorless. Fishy-smelling discharge is more likely bacterial vaginosis, which differs from candidiasis. Other symptoms include vulvar redness and swelling, burning sensation during urination, and pain during intercourse. Symptom severity ranges from mild itching to intense itching that interferes with daily life.

Why candidiasis keeps recurring - causes of recurrence

The causes of recurrent vaginal candidiasis are numerous. Antibiotic use is the most common trigger. Antibiotics kill not only pathogenic bacteria but also vaginal lactobacilli, creating an environment where Candida can proliferate. Reduced immunity (stress, sleep deprivation, overwork) also allows Candida overgrowth. In diabetes or poorly controlled blood sugar, glucose concentration in vaginal secretions rises, providing nutrition for Candida. During pregnancy, elevated estrogen increases vaginal glycogen, promoting Candida growth. Non-breathable underwear, tight pants, and prolonged use of sanitary pads also promote Candida proliferation through moisture buildup. For more on how chronic stress affects the body, see our article on the physical effects of chronic stress.

Proper treatment - choosing between OTC and prescription medications

First-time episodes

If you experience candidiasis symptoms for the first time, do not self-treat with OTC medications - visit a gynecologist. Microscopic examination of discharge to confirm Candida hyphae or spores for definitive diagnosis is important. This is necessary to rule out other infections with similar symptoms, such as bacterial vaginosis or trichomoniasis.

Recurrent episodes

If you have been previously diagnosed by a doctor and the same symptoms recur, you can begin treatment with OTC medications (vaginal tablets/cream) available at pharmacies. Antifungal clotrimazole vaginal tablets (6 days) or isoconazole vaginal suppositories (3 days) are common. Antifungal cream can be used concurrently for vulvar itching. As a prescription option, oral fluconazole (Diflucan) is convenient and effective. A single 150 mg dose cures approximately 90% of cases.

Lifestyle changes to prevent recurrence

Preventing Candida recurrence requires lifestyle habits that maintain a healthy vaginal environment. Choose breathable cotton underwear and avoid prolonged wear of tight jeans or leggings. Change out of wet clothing promptly after bathing or swimming. Wash the intimate area externally only with unscented soap or warm water, and avoid vaginal douching. Vaginal douching washes away lactobacilli and promotes Candida growth. Change sanitary pads and panty liners frequently to prevent moisture buildup. Stress management and adequate sleep are also essential for maintaining immunity and indirectly help prevent Candida recurrence. Excessive sugar and refined carbohydrate intake raises blood sugar levels and provides nutrition for Candida, so maintain a balanced diet. For comprehensive intimate area care, see our article on proper intimate area care. Books on Candida management can also be found on Amazon.

Partner transmission and precautions during intercourse

Vaginal candidiasis is not classified as a sexually transmitted infection (STI), but transmission to a partner through intercourse is possible. If a male partner shows penile itching, redness, or white debris-like deposits, Candida balanitis is possible and urology consultation is needed. Abstain from intercourse or use condoms during treatment. Oil-based vaginal tablet and cream bases may degrade latex condoms, so polyurethane condoms are recommended. Inadequate partner treatment can lead to ping-pong infection (repeatedly passing the infection back and forth).

When to see a doctor

See a gynecologist rather than self-treating in the following cases: recurrence 4 or more times per year (recurrent vulvovaginal candidiasis), no improvement after 3 or more days of OTC treatment, fever or lower abdominal pain, pregnancy, or diabetes or immunosuppressed state. For recurrent candidiasis, fluconazole maintenance therapy (once weekly for 6 months) may be considered. Additionally, non-albicans species (particularly Candida glabrata) may show resistance to standard antifungals, requiring culture testing to identify the species and select appropriate medication. For more on hormonal balance and health, see our article on the relationship between hormonal balance and lifestyle. Intimate care products can also be found on Amazon.

Common misconceptions about vaginal candidiasis

There is a misconception that "Candida is caused by poor hygiene," but candidiasis can develop even with good hygiene. In fact, excessive washing disrupts the vaginal environment and increases risk. The folk remedy of "inserting yogurt into the vagina" has no scientific basis and carries infection risk, so it is not recommended. The misconception that "Candida is an STD" is also persistent, but women without sexual experience can develop it. Having accurate knowledge reduces unnecessary shame and anxiety, leading to appropriate treatment and faster symptom resolution.