by Dwight Alleyne Is your dog or cat suddenly shaking their head? Are they scratching at their ears, or are they looking red? Your furry friend may have an ear infection. Certain factors can upset the balance of the ear environment. But what causes ear infections in cats and dogs exactly? Let’s get into that and some common treatments because it helps to know how you can prevent these from recurring in your pet. Yeast Overgrowth is the Enemy Yeast naturally resides in the environment or microbiome of the ears and skin. Certain factors in your pet’s microbiome help regulate yeast growth to create a healthy balance in the ear. But that balance can be disrupted when underlying factors cause inflammation in the ear. Inflammation can then cause swelling and the glands to over-secrete. This process leads to a moist environment in the ear canal. And because yeast thrives in a dark, moist environment, yeast overgrowth ensues. Overgrowth leads to dark brown discharge, an unpleasant odor and scratching at the ears.  Environmental Allergies’ Role in Ear Yeast Infections Several underlying conditions can cause an imbalance in the skin microbiome and lead to yeast overgrowth. Allergies are one of them, and skin allergies are among the most common causes of ear yeast infection in dogs and cats. Your pets can be allergic to things in the environment, food or a combination of both. Exposure to an allergen causes redness, swelling and increased secretion of the skin glands.  Parasites’ Role in Ear Yeast Infections Ear mites are the most common parasite that can contribute to yeast infections. Even though they can occur in dogs, they most commonly occur in cats. These tiny insects like to live and reproduce in the ear canal, causing significant irritation and inflammation. This disrupts the delicate balance of the ear canal’s microbiome. Anatomy of the Ear and Other Contributors to Ear Yeast Infections This is more likely to affect dogs than cats. Dogs with floppy ears or a lot of hair around or in their ears can be predisposed to ear yeast infections. Those floppy ears (cute as they are!) that aren’t well ventilated and are extra hairy can trap moisture, a condition that’s favorable for yeast overgrowth. Pets who are frequent swimmers can also be more prone to ear infections because of the constant exposure to moisture. Best Way To Treat an Ear Yeast Infection  To effectively treat your pet’s ear infection, find out what is disrupting the environment of the ear. Your veterinarian can perform tests using the discharge from the ears to confirm an infection. An ear swab cytology test can help determine if there are ear mites, yeast or a bacterial infection present. Based on those results, the appropriate treatment can be administered. Restore the Microbiome This is an essential part of holistic treatment, since there is an imbalance within the ear promoting yeast overgrowth. A product that can help restore the microbiome and prevent further growth of yeast is needed for short- and long-term care. Fortunately, Skout’s Honor’s probiotic line is scientifically-proven by third-party testing to stop and prevent the overgrowth of yeast. The Probiotic Ear Cleaner for dogs and cats is here to give your pet relief. It’s also great to use for maintenance to prevent a recurrence. Learn more about the full probiotics line here.  What Have You Learned About Ear Yeast Infections? Ear yeast infections can be managed and prevented when you restore balance to the microbiome. Having Skout’s Honor probiotic products in your arsenal can help maintain this balance. If you notice an ear issue with your cat or dog, let your veterinarian confirm that there’s an infection and treat it appropriately. Then make sure you get your hands on our probiotics to help prevent future infections.   Dr. Dwight Alleyne is a veterinarian who has over a decade of experience treating cats and dogs. He is also the creator of the Animal Doctor Blog, where he provides general health advice and pet product reviews. References:  Today’s Veterinary Nurse - Ear Cytology: Sampling, Processing, and Microscopic Evaluation Fetch by WebMD - Yeast Infection in Dogs’ Ears: Causes, Treatment, and Prevention Veterinary Partner - Ear Infection (Yeast Otitis) in Dogs

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