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If your dog has been scratching excessively, shaking its head, or licking its paws more than usual, it might have a yeast infection.
Yeast infections in dogs are common and frustrating, especially if they keep returning.
But what causes dog yeast infections, and what can you do to prevent them? Let's break it down.
What Is a Yeast Infection in Dogs?
Yeast infections occur when Malassezia, a fungus naturally present on a dog's skin, overgrows.
Normally, yeast lives on a dog's body without causing any harm.
However, when certain conditions create an imbalance, yeast multiplies rapidly, leading to infections.
These infections commonly affect the ears, paws, skin folds, groin, and underbelly.
Yeast thrives in warm, moist environments, so dogs with floppy ears, wrinkles, or frequent skin irritation are more prone to infections.
If left untreated, yeast infections can cause discomfort, inflammation, and even secondary bacterial infections.
What Causes Dog Yeast Infections?
Various factors can contribute to yeast overgrowth in dogs.
Understanding the root cause can help prevent recurring infections.
1. Underlying Health Issues
Allergies
Dogs with food or environmental allergies often develop yeast infections because allergies weaken the skin's defenses.
Common allergens include pollen, dust mites, and certain proteins in dog food.
RELATED: 8 Most Common Allergies In Dogs You Should Be Aware of
Hormonal Imbalances
Conditions like hypothyroidism or Cushing's disease affect hormone levels, weakening the immune system and allowing yeast to grow unchecked.
2. Moisture & Humidity
Floppy Ears or Skin Folds
Dogs with floppy ears (such as Cocker Spaniels and Basset Hounds) or deep skin folds (Bulldogs, Shar Peis) trap moisture, creating a perfect breeding ground for yeast.
Frequent Swimming or Bathing
Excessive water exposure can disrupt the skin's natural balance, allowing yeast to multiply.
RELATED: How To Dry A Dog After Bathing or Swimming
3. Diet & Gut Health
High-Carb Diets
Yeast feeds on sugar, and high-carbohydrate diets (which break into sugar) can contribute to excessive yeast growth.
Poor Gut Health
A dog's gut microbiome plays a big role in immune function.
Antibiotic overuse can kill off good bacteria, making it easier for yeast to thrive.
RELATED: Homemade Probiotics For Dogs Good for Their Gut Health
4. Weak Immune System
Dogs recovering from an illness, undergoing stress, or taking medications like steroids are at higher risk for yeast infections due to weakened immunity.
Symptoms of a Yeast Infection in Dogs
Yeast infections can appear in different ways depending on the location of the infection.
Here are some telltale signs:
Itchy, inflamed skin – Dogs with yeast infections often scratch, bite, or rub against surfaces to relieve irritation.
Musty or “corn chip” smell – Yeast produces a distinct odor, especially in the ears and paws.
Greasy or discolored skin – Affected areas may look darker, greasy, or flaky.
Ear infections — Yeast may be the culprit if your dog frequently shakes its head, scratches its ears, or has a brownish discharge.
Paw licking and nail discoloration – Persistent paw licking, redness between the toes, and brown-stained nails can indicate a yeast issue.
| Symptom | Common Areas Affected |
|---|---|
| Itchy, red skin | Paws, groin, ears |
| Musty odor | Ears, skin folds |
| Greasy or flaky skin | Armpits, belly, paws |
| Chronic ear infections | Inner ear canal |
| Darkened, thick skin | Underbelly, neck, tail |
How to Treat Yeast Infections in Dogs
1. Veterinary Diagnosis & Treatment
If you suspect your dog has a yeast infection, visit a vet for a proper diagnosis.
Your vet may take a skin scraping or ear swab to confirm yeast overgrowth.
Prescription antifungal medications, such as ketoconazole, fluconazole, or miconazole, may be recommended for severe cases.
RELATED: Best Dog Skin Infection Treatment (Top Over-the-Counter Medicine for Dogs)
2. Medicated Shampoos & Topical Treatments
Antifungal shampoos containing chlorhexidine or ketoconazole help reduce yeast buildup.
Bathing your dog 2-3 times a week with these shampoos can significantly improve symptoms.
RELATED: Oatmeal Bath for Dogs
Ear cleaners with antifungal properties help eliminate yeast in the ears. Always use vet-approved ear-cleaning solutions.
3. Dietary Adjustments
Switching to a low-carb diet with high-quality proteins and minimal grains can help control yeast overgrowth.
Adding probiotics and digestive enzymes to your dog's diet can promote gut health and prevent yeast from thriving.
RELATED: Recipe: Homemade Dog Food for Yeast Infections
4. Home Remedies & Natural Solutions
Several home remedies are available to treat dog yeast infections. Just make sure you resort to these with your vet's approval!
Apple Cider Vinegar Rinse
Diluting apple cider vinegar (50/50 with water) and using it as a rinse can help balance skin pH and fight yeast.
Coconut Oil
Applying organic coconut oil to affected areas has antifungal properties that can soothe irritated skin.
We have discussed this option further in the article linked below.
RELATED: 3 Best Dog Yeast Infection Home Remedies
Preventing Yeast Infections in Dogs
Prevention is key, especially for dogs prone to recurring yeast infections.
Here's how to keep your pup yeast-free:
Keep ears and paws dry, especially after baths or swimming.
Regular grooming to remove excess moisture and prevent matting.
A balanced diet with high-quality protein and minimal carbohydrates.
Routine vet check-ups to monitor for underlying health issues.
Use probiotics to support a healthy gut microbiome and strengthen the immune system.
RELATED: Recipe: Anti Yeast Dog Food with Chicken
FAQs about Yeast Infection in Dogs
1. Can yeast infections in dogs go away on their own?
No, yeast infections in dogs typically do not resolve on their own.
The infection can worsen without treatment, causing further discomfort and potentially leading to bacterial infections.
Prompt veterinary care is the best way to ensure a full recovery.
2. Are certain dog breeds more prone to yeast infections?
Yes! Breeds with floppy ears (Cocker Spaniels, Basset Hounds), wrinkly skin (Bulldogs, Shar Peis), and allergy-prone breeds (Labradors, Golden Retrievers) are at higher risk.
These dogs require extra hygiene care to prevent yeast infections.
3. Can a dog's diet cause yeast infections?
Yes, diet plays a significant role. High-carb or processed diets can fuel yeast overgrowth.
Reducing sugar intake and incorporating probiotics and omega-3 fatty acids can help maintain a healthy yeast balance.
Yeast Infection in Dogs: Conclusion
Yeast infections in dogs are common but manageable with proper care.
Understanding what causes dog yeast infections, recognizing early symptoms, and following a treatment plan can help your dog stay comfortable and healthy.
Prevention is just as important—keeping your dog's skin dry, feeding a balanced diet, and scheduling regular vet check-ups can reduce the risk of future infections.
Has your dog ever struggled with a yeast infection? Share your experiences in the comments below!
You may also check out our related posts below.
