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Oral thrush (yeast in the mouth)

Also called: Oral thrush, yeast in the mouth, candidiasis

White patches in the mouth or on the tongue from yeast. It's common in babies, denture wearers, and after antibiotics or inhaled steroids.

CauseCandida yeast
TreatmentAntifungal medicine

Overview

Patches may leave red sore spots when wiped.

Symptoms

Common signs:

  • White patches in the mouth
  • White patches in the mouth that wipe off

Less common

  • Sore mouth

When to get medical care

Call 911This isn't an emergency by itself. Call 911 for trouble breathing, chest pain, or fainting.
Get care todayTrouble swallowing or a baby not feeding.
See a doctor soonThrush lasting or coming back.

Causes

Yeast overgrowth.

Does it spread or run in families?

  • It usually doesn't spread from person to person.
  • People get it from: hospitals or clinics (mostly in people with weak immune systems).

Who is more likely to get it

  • Babies
  • Diabetes
  • Weak immune system

Diagnosis

Diagnosis by looking.

Treatment

Treat and prevent.

Self-care

  • Rinse after steroid inhalers
  • Clean dentures
  • Sterilize bottle nipples

Medicines

Medicines that may help:

MedicineHelps withGood to know
Antifungals
YeastPrescription.

OwieClear doesn't give doses: follow the label or your healthcare professional. Medicine names here are examples, not a full list.

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to a dentist or an ENT doctor (ear, nose, and throat doctor).

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Some infections can pass to the baby during pregnancy or birth. Tell your provider if you've been exposed.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

Outlook

Clears.

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Oral thrush (yeast in the mouth)

Sources

Last updated 2026-11-12.