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What is Vaginal Thrush (Candidiasis)?
Vaginal thrush (candidiasis) is a yeast infection caused by Candida species, most commonly Candida albicans. It's extremely common - about 75% of women will experience thrush at some point, and many have recurrent episodes. Thrush is not a sexually transmitted infection but results from overgrowth of yeast naturally present in the vagina. Treatment is usually straightforward.
Symptoms
- Intense vaginal and vulval itching
- Thick, white 'cottage cheese' discharge
- Vaginal soreness and irritation
- Redness and swelling of vulva
- Pain or stinging when urinating
- Discomfort or pain during sex
- Discharge usually has no strong odour
Causes
- Overgrowth of Candida yeast (usually C. albicans)
- Antibiotic use (kills bacteria that keep yeast in check)
- Hormonal changes (pregnancy, menstrual cycle, contraceptives)
- Diabetes (especially poorly controlled)
- Weakened immune system
- Tight, non-breathable clothing
- Perfumed products around genital area
Who Is at Risk?
- Women of reproductive age (most common)
- Women taking antibiotics
- Pregnant women
- Women with diabetes
- Women using high-oestrogen contraceptives
- Immunocompromised individuals
- Women who wear tight synthetic clothing frequently
Potential Complications
- Recurrent thrush (4+ episodes per year)
- Skin cracking and secondary infection from scratching
- Chronic vulval discomfort
- Impact on sexual relationships and quality of life
- Rarely, systemic candidiasis in immunocompromised
- Generally not associated with serious health problems
How We Diagnose
Classic symptoms often suggest thrush, but similar symptoms occur with other conditions. We can examine discharge and perform microscopy or culture to confirm Candida and rule out bacterial vaginosis, trichomoniasis, or other causes. If you've self-treated without improvement, professional diagnosis is important as you may not have thrush.
Treatment Options
Antifungal treatment is highly effective. Options include oral fluconazole (single dose or short course) or topical treatments (clotrimazole cream or pessaries). Severe or recurrent thrush may need longer or maintenance treatment. Partner treatment is usually unnecessary unless they have symptoms. If standard treatment fails, culture can identify resistant strains.
Prevention
Frequently Asked Questions
Is thrush sexually transmitted?
No, thrush is not an STI. It's caused by overgrowth of yeast naturally present in your body. However, thrush can occasionally be passed to sexual partners causing symptoms, and sex can trigger thrush by disrupting vaginal balance. Male partners usually don't need treatment unless they have symptoms.
Can I treat thrush with natural remedies?
Evidence for natural remedies like yogurt, garlic, or tea tree oil is limited and some may cause irritation. Antifungal medications are proven effective and readily available. While probiotics may help prevent recurrence, they're not reliable treatment for active thrush. We recommend proven treatments for reliable results.
Why do I keep getting thrush?
Recurrent thrush (4+ episodes/year) affects some women and can be frustrating. Triggers include antibiotics, hormonal changes, diabetes, and immune issues. Non-albicans Candida species may be involved and respond differently to treatment. We can investigate causes and provide prevention strategies including maintenance treatment if needed.
Can men get thrush?
Yes, men can get penile thrush causing redness, itching, and discharge under the foreskin. It's more common in uncircumcised men, diabetics, and after antibiotic use. While thrush isn't sexually transmitted, it can be passed between partners. Men with symptoms should be treated. Asymptomatic male partners usually don't need treatment.
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Concerned About Vaginal Thrush (Candidiasis)?
Book a confidential consultation or STI test at our South Kensington clinic. Walk-in appointments available.




