# Dog Yeast Infections: Recognition and Treatment
Yeast infections in dogs cause persistent itching and discomfort that owners often notice first in the ears, paws, and skin folds. These infections develop when Candida or Malassezia yeast overgrows on your dog's skin.
Dogs with yeast infections typically display constant ear scratching, excessive paw licking, and red or inflamed skin. Some dogs develop a distinctive musty odor. Yeast thrives in warm, moist environments, making ear canals and between toes particularly vulnerable spots.
Several factors trigger yeast overgrowth in dogs. Allergies, whether food-based or environmental, create conditions where yeast flourishes. Weakened immune systems, hormonal imbalances, and prolonged antibiotic use also increase infection risk. Dogs with droopy ears or those who spend significant time in water face higher susceptibility. Certain breeds, including Cocker Spaniels and Basset Hounds, experience yeast infections more frequently.
Your veterinarian diagnoses yeast infections through physical examination and sometimes skin cytology. Early identification prevents secondary bacterial infections.
Treatment approaches depend on infection severity. Topical antifungal medications, including medicated shampoos and ear drops, address localized infections effectively. Oral antifungals like terbinafine or fluconazole treat systemic or severe cases. Your vet may recommend prescription products such as Zymox or Mometamax for ear infections.
Preventing recurrence requires addressing underlying causes. If allergies trigger infections, allergy management becomes essential. Regular ear cleaning, especially for dogs with floppy ears, reduces yeast habitat. Bathing your dog in medicated shampoo weekly during treatment, then monthly for prevention, helps control yeast populations.