Why Thrush Develops

The vagina normally maintains a delicate balance between protective bacteria and naturally occurring yeast. When this balance is disrupted — for example by antibiotics, hormonal changes, or irritation — yeast can overgrow and cause inflammation.

In men, irritation under the foreskin, poor hygiene, or underlying health conditions may increase susceptibility.

Risk Factors

Certain factors increase the likelihood of developing thrush:

• Recent antibiotic use, hormonal contraception (including the combined oral contraceptive pill), increased sexual activity, pregnancy, poorly controlled diabetes, and immune suppression.

Antibiotics are a particularly common trigger because they reduce protective vaginal bacteria, allowing yeast to flourish.

Symptoms

Symptoms can vary in severity and may develop gradually or suddenly.

Women

Vaginal itching, irritation or soreness; thick white discharge (often described as “cottage cheese” in appearance); discomfort during urination; and pain during sexual intercourse.

Men

Redness or small red spots on the head of the penis; itching or irritation; swelling; and increased smegma (white discharge beneath the foreskin).

Symptoms in men are often milder but can still cause significant discomfort.

Diagnosis

Thrush is often diagnosed based on symptoms and examination. In uncertain or recurrent cases, a swab may be taken to confirm the presence of Candida and exclude other infections, particularly sexually transmitted infections with similar symptoms.

Treatment

Thrush is usually straightforward to treat with antifungal medication, available as oral tablets, vaginal pessaries, or topical creams.

Symptoms often improve within a few days of starting treatment. In recurrent cases, a longer course of antifungal therapy may be required. Where relevant, underlying triggers such as diabetes or antibiotic use should be addressed.

If both partners have symptoms, simultaneous treatment may help reduce reinfection.

When to Seek Medical Advice

You should seek medical review if:

• Symptoms are severe or recurrent
• This is your first episode
• Symptoms do not improve with treatment
• You are unsure whether it is thrush or another infection

Because other conditions can mimic thrush, proper assessment ensures accurate diagnosis and effective treatment.

Supporting Long-Term Vaginal and Genital Health

Maintaining good genital hygiene, avoiding irritants (such as perfumed soaps or harsh products), wearing breathable underwear, and managing underlying health conditions can reduce recurrence risk.

If you experience repeated episodes, a personalised assessment can help identify contributing factors and provide a structured sexual health management plan.