Recurring Skin Infections in Dogs: Causes and Care

Published on: 10/29/2026

Key Takeaways

Recurring skin infections in dogs and cats are often caused by underlying conditions, including environmental or food allergies, hormonal disorders, parasites, and excess moisture that can contribute to skin irritation.
Antibiotics may treat bacterial skin infections, but identifying and managing underlying causes, such as yeast overgrowth or allergies, is essential to reducing the risk of recurring infections.
Medicated antibacterial and antifungal shampoos can help manage bacterial and yeast-related skin infections, with bathing frequency depending on the severity of the condition and your veterinarian's recommendations.
Keeping your pet's skin clean and dry, regularly washing bedding, and incorporating omega fatty acid or allergy supplements may help support healthy skin and reduce recurring irritation.
Topical sprays and pet-safe insect repellents can provide additional skin care support between baths, while working closely with your veterinarian helps ensure an effective treatment plan for long-term skin health.

One of the most common questions Valley Vet Supply’s Technical Service Veterinarian, Dr. Laura Meier hears from pet owners involves recurring skin infections. “My vet treated my pet with antibiotics for a skin infection, but as soon as the treatment ended, the infection came right back. What should I do now?”

Why Do Skin Infections Keep Coming Back?

“Skin conditions can be challenging to treat in pets because several factors may contribute to irritation or infection,” says Dr. Meier. “In many cases, skin infections are a secondary problem caused by an underlying condition.”

Common contributing factors include:

Physical characteristics: Thick hair coats or long, hairy ears that can trap moisture and limit airflow
Environmental allergies: Reactions to pollen, dust mites, grass and other environmental allergens
Food allergies: Reactions to certain ingredients in a pet’s diet
Insects and parasites: Fleas, ticks, mites and other parasites that can irritate the skin
Hormonal conditions: Endocrine disorders, such as Cushing’s disease and diabetes, that can increase susceptibility to skin infections
Lifestyle factors: Frequent exposure to moisture from swimming, playing in water or hunting in wet environments

Skin infections in dogs can be particularly common when their natural skin barrier becomes compromised. Excessive scratching, licking or chewing can create tiny breaks in the skin, allowing bacteria and other pathogens to enter and potentially cause infection.

While antibiotics may treat the bacteria contributing to a skin infection, they do not address other underlying factors, such as yeast overgrowth or allergies. If these issues remain untreated, skin irritation can persist, allowing the infection to return once antibiotic treatment ends.

Identifying and managing these underlying issues is an important step in breaking the cycle of recurring skin infections in dogs or cats. Depending on the cause, your veterinarian may recommend a combination of treatments to help manage the infection and support long-term skin health.

Treating Skin Infections with Medicated Shampoos

To help address both bacterial and yeast-related skin infections, your veterinarian may recommend bathing your dog with a medicated antibacterial and antifungal shampoo, such as:

Medicated shampoos typically need to remain in contact with the skin for several minutes to provide their intended therapeutic benefits. Depending on the product, contact times may range from 5 to 15 minutes. Always read and follow the product label for specific instructions.

The recommended bathing frequency depends on the severity of the skin condition and your veterinarian’s guidance:

Severe cases: Bathing every 1 to 2 days may be recommended
Mild cases: Bathing twice weekly may be sufficient
Maintenance: Dogs with a history of recurring skin infections may benefit from weekly medicated baths to help manage future flare-ups

Keeping Your Pet’s Skin Clean and Dry

When a bacterial or fungal (yeast) skin infection is present, one of the biggest priorities is keeping the affected area clean and dry.

“Bacteria and yeast can thrive in warm, moist environments, making moisture management an important part of treatment,” says Dr. Meier. “In some cases, carefully clipping the hair around the affected area can help improve airflow, allow the skin to dry and make it easier to see the full extent of the irritation or lesion.”

Avoid applying petroleum jelly or other thick, moisture-trapping ointments to infected areas unless recommended by your veterinarian.

Don’t overlook your pet’s environment, including bedding and blankets. Skin oils, dander and other debris can accumulate on these surfaces, creating conditions that may allow microorganisms to persist. Wash your pet’s bedding and blankets regularly using a mild, fragrance-free and dye-free detergent that is safe for pets. Thoroughly dry all bedding before you return it to your pet.

Daily Supplements to Support Skin Health

Dr. Meier recommends considering daily supplements as part of a long-term skin care routine to help support healthy skin and reduce recurring irritation.

Omega Fatty Acid Supplements

Adding an omega fatty acid supplement to your pet’s diet can help support a healthy skin barrier, promote a healthy skin and coat, and maintain skin moisture. Omega-3 fatty acids may also help manage inflammation associated with certain skin conditions.

Recommended products:

Allergy Supplements

For pets prone to seasonal or environmental allergies, certain allergy supplements may help support a normal immune response and maintain healthy histamine levels. Depending on their ingredients, these supplements may help support skin comfort in pets experiencing occasional itching and irritation.

Recommended products:

Topical Sprays for Between-Bath Relief

Between medicated baths, topical sprays may help soothe irritated skin, relieve occasional itching and support skin health. Choose a product based on your pet’s specific skin condition and follow the label directions.

Products to consider:

Don’t Overlook Insect Control

During warmer months, insects can be another source of skin irritation, especially for pets that spend time outdoors. Bites from flies, mosquitoes, no-see-ums and other biting insects can trigger itching and scratching, potentially damaging the skin barrier and increasing the risk of secondary infections. Using a pet-safe insect repellent can help reduce exposure to biting insects and the irritation they cause.

Insect repellent options:

Important: Always read the product label to ensure an insect repellent is safe for your pet’s species. Permethrin products are particularly toxic to cats, and some pyrethrin-containing products may also be unsafe if not specifically labeled for feline use.

As you can see, skin infections can be challenging to manage, especially when multiple underlying factors contribute to the problem. That’s why maintaining open communication with your veterinarian is so important. Working together to identify the root cause and develop an effective treatment plan can help reduce recurring infections and keep your pet’s skin healthy and comfortable.

Frequently Asked Questions

Why does my dog keep getting skin infections?

Recurring skin infections in dogs are often caused by underlying issues such as environmental allergies, food allergies, hormonal conditions or excess moisture. While antibiotics may treat a bacterial infection, they don’t address other contributing factors, such as yeast overgrowth or allergies. Identifying and treating the underlying cause is key to preventing recurring infections.

How can I tell if my dog has a recurring skin infection?

Common signs of skin infections in dogs include persistent itching, scratching, licking, redness, hair loss, unusual odors and irritated or inflamed skin. If these symptoms return shortly after treatment or continue to develop in the same areas, your dog may be experiencing recurring skin infections. Your veterinarian can help determine whether an infection is present and what’s causing it.

When should I take my dog to the vet for recurrent skin issues?

Contact your veterinarian if your dog’s skin irritation persists, worsens or returns after treatment. Signs such as excessive scratching, hair loss, redness, sores or unusual skin odors may indicate an infection that requires veterinary attention. Early diagnosis and treatment can help address underlying causes and reduce the risk of future flare-ups.

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