What is oral thrush?
A fungal infection of the lining of the mouth, usually caused by Candida.
← All explanationsOral thrush
When is a white coating more than tongue coating?
Oral thrush is a fungal infection of the lining of the mouth, usually caused by Candida yeasts. It may cause white patches, red or burning areas and changes in taste. A white coating alone does not prove thrush; an examination helps establish the cause.
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When a yeast grows out of balance
Candida yeasts can be present in the mouth without causing symptoms. Increased growth may lead to an infection of the lining of the mouth.
A coating is not proof
Thrush can cause white patches, redness and burning. Similar-looking areas can have other causes. Do not scrape them off or treat them based on photographs.
Treat the cause as well as the infection
After examination, antifungal medicine may be used if needed. Denture care, medication and conditions that increase susceptibility are also considered.
At a glance
What might be noticeable?
Patches, redness or burning; these signs are not specific.
What is a sensible next step?
Have the cause examined and treat a confirmed infection appropriately.
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Often confused
Oral thrush or tongue coating?
Thrush is an infection; an ordinary tongue coating is not automatically a disease. Appearance alone cannot reliably distinguish them.
Quick answers
What can make oral thrush more likely?
Factors include antibiotics, certain steroid inhalers, dentures and reduced immunity. Do not stop prescribed medication without medical advice.
Does every white tongue mean thrush?
No. Tongue coating and other changes to the lining of the mouth can look similar. Sometimes a sample helps clarify the examination findings.
When should I seek help promptly?
Seek medical advice promptly for painful or difficult swallowing, or if your immune system is weakened. Persistent or recurring changes also need examination.
At the practice
For your consultation
A question to discuss with Dr. med. dent. Niusha Barahmand Pour:
What might explain the changes in my mouth, and could medication or my dentures play a part?
Symptoms, examination findings and personal wishes form the basis of individual treatment planning.
Persistent patches or burning deserve an examination.
Have mouth changes assessedChoose an appointment on DoctolibLearning for dental trainees & teamsUnderstand clinical terms and build your knowledge
Build on the simple explanation with clinical terms, key distinctions and a knowledge question.
- Candida
- A group of yeasts that can colonise mucosal surfaces.
- Candidiasis
- An infection caused by Candida yeasts.
- Antifungal medicine
- A medicine used to treat fungal infections.
Know the difference
Finding Candida alone does not necessarily establish an infection requiring treatment. Symptoms and clinical findings are part of the assessment.
Sources and context
Editorial research: 23 October 2026. This explanation covers general principles and does not replace a personal examination. Suitable treatment is discussed following individual assessment.