How do I know if my dog has a yeast ear infection?

Common signs include head shaking, ear scratching, a strong yeasty or musty odour, brown waxy discharge and red inflamed ear canals. One or both ears may be affected.

What causes yeast infections in dog ears?

Malassezia yeast overgrows when the ear environment becomes warm and moist — often due to allergies, swimming, floppy ear anatomy or underlying bacterial infection. Allergies are the leading underlying cause of chronic yeast otitis.

Can I treat yeast ear infections at home?

Over-the-counter drops rarely resolve yeast otitis and can mask deeper problems. Your vet should examine the ear, identify yeast on cytology, and prescribe appropriate antifungal treatment.

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Yeast infections in ears

Quick answer

**Yeast ear infections** in UK dogs cause head shaking, scratching and a characteristic yeasty smell with brown waxy discharge. They are usually secondary to allergies or moisture. See your vet for diagnosis — **do not use human ear drops** or insert cotton buds deep into the canal.

Key takeaways

Common signs include head shaking, ear scratching, a strong yeasty or musty odour, brown waxy discharge and red inflamed ear canals. One or both ears may be affected.
Over-the-counter drops rarely resolve yeast otitis and can mask deeper problems. Your vet should examine the ear, identify yeast on cytology, and prescribe appropriate antifungal treatment.

The full guide

Causes, symptoms, treatment options and when to call your vet — in the complete plain-English guide.

Read: Yeast Ear Infections in Dogs UK Check symptoms

Frequently Asked Questions

How do I know if my dog has a yeast ear infection?: Common signs include head shaking, ear scratching, a strong yeasty or musty odour, brown waxy discharge and red inflamed ear canals. One or both ears may be affected.
What causes yeast infections in dog ears?: Malassezia yeast overgrows when the ear environment becomes warm and moist — often due to allergies, swimming, floppy ear anatomy or underlying bacterial infection. Allergies are the leading underlying cause of chronic yeast otitis.
Can I treat yeast ear infections at home?: Over-the-counter drops rarely resolve yeast otitis and can mask deeper problems. Your vet should examine the ear, identify yeast on cytology, and prescribe appropriate antifungal treatment.