Dog Ringworm Treatment: Causes, Symptoms, Home Remedies & Prevention

Ringworm can be contracted by any animal, not just dogs. This is a relatively rare condition in dogs; however, several ringworm treatments and home remedies can help combat the infection. From natural remedies using apple cider vinegar to coconut oil, we've selected a few things you can try at home that are quick and easy  alongside broader dog health remedy tips for pet parents managing skin and coat concerns.

Before learning these dog ringworm home remedies, it is crucial to understand what ringworm is and how it affects your pet's health.

 

What Is Ringworm? 

Despite the name, ringworm is not a worm but a fungus. The ringworm’s name, or dermatophytosis, derives from the circular shape the fungus creates on the skin of humans, although the same skin lesions are not always classic on our dogs and cats. Dermatophytes (ringworm species) are found in many environments and on animals.  Some, like Microsporum gypseum, are naturally found in soil, while others, like Trichophyton mentagrophytes, are found in rodents.

In dogs, about 70% of ringworm cases are caused by the fungus Microsporum canis. 20% of ringworm cases in dogs are caused by Microsporum gypseum, and Trichophyton mentagrophytes causes 10% of dog ringworm cases. Ringworm in dogs is highly contagious and can spread easily to other pets and humans through direct contact or contaminated objects. Proper treatment and hygiene practices are important to help control its spread.

Dogs can get ringworm in several ways. The infection spreads easily because ringworm spores can live in the environment for a long time, even before an infected animal shows symptoms.

• Direct contact with infected animals: The most common cause is contact with another animal that has ringworm. Some infected animals may not show signs right away, but can still spread the fungus.

• Contaminated objects: Dogs can also catch ringworm from items that carry fungal spores, such as grooming tools, bedding, toys, cages, or brushes.

• High-risk environments: Places with many animals, like kennels, shelters, or grooming facilities, can increase the risk of ringworm spreading from one infected animal to another.

• Skin damage or irritation: Wounds, flea bites, or broken skin including issues caused by ear mites can make it easier for the ringworm fungus to infect your dog's skin.

• Poor hygiene or nutrition: Dogs with poor hygiene or an unhealthy diet may have a higher risk of developing a ringworm infection.

• Soil exposure: Some types of ringworm live in soil. Dogs that dig, sniff burrows, or push their muzzles into the dirt may develop ringworm on their muzzles or faces.

 

Symptoms Of Dog Ringwor

Ringworm affects the skin, hair, and, at times, the nails. Infected nails, hair follicles, sensitive skin, and dead skin become so brittle that they may break off effortlessly, while also causing the spread of the fungus.

Symptoms of ringworm may include:

• Hair loss (which may or may not be in a circular pattern)

• Inflamed skin with redness

• Scabs

• Some itchiness

• Dry and brittle hair

• Brittle nails

• Acne-like bumps

• Changes in coat thickness or sheen

There are many skin diseases and infections with similar symptoms, such as dog mange. If an owner notices inflamed skin lesions or hair loss, it does not mean their dog has ringworm. Allergies, parasites, or neurological conditions requiring medications like phenobarbital for canine seizures may also contribute to skin-related stress symptoms that resemble ringworm.

 

Prevention Of Dog Ringworm

Preventing dog ringworm starts with keeping your dog’s environment clean and dry. The ringworm fungus grows best in warm, damp places, and its spores can survive in the home for months if left untreated.

• Wash your dog’s bedding, blankets, and toys regularly to help reduce environmental contamination. 

• Vacuum your home often: Carpets can trap ringworm spores, pet hair, and dead skin cells. Regular vacuuming helps reduce the risk of spread.

• Disinfect common areas: Clean the spots where your dog spends the most time, especially floors, crates, furniture, and grooming areas.

• Keep your dog clean and dry: Good hygiene can help lower the chance of fungal growth, especially after baths or outdoor play.

• Watch for early signs: Look for signs of dog ringworm, such as circular bald patches, scaly skin, redness, itching, or broken hairs.

• Act quickly if infection appears: Supporting your dog's immune system through vet-recommended probiotics for dogs and dog vitamin chews may also help maintain overall skin and coat resilience. If your dog has ringworm, separate them from other pets and contact your vet. Early treatment can help prevent the infection from spreading or worsening.

 

Home Remedies For Dog Ringworm

Some home remedies may help soothe your dog’s skin, but ringworm is a fungal infection that often needs proper veterinary treatment. If the infection spreads, worsens, or does not improve, contact your vet for antifungal medication or medicated shampoo.

• Antifungal pet shampoo: A vet-approved antifungal shampoo is one of the most helpful options for dog ringworm. It can help clean the affected areas and reduce fungal spores on your dog’s coat. Always follow the product instructions and avoid getting shampoo near your dog’s eyes, ears, nose, or mouth.

• Apple cider vinegar: Some owners use diluted apple cider vinegar as a topical rinse or spray. It may help with itching, but it can also sting irritated or broken skin. Use caution and stop if your dog seems uncomfortable.

• Coconut oil: Coconut oil may help moisturize dry, scaly patches. Apply a small amount to the affected area, but watch your dog closely so they do not lick it off. A cone may help prevent licking.

• Avoid harsh or risky ingredients: Tea tree oil is often suggested online, but it can be toxic to dogs if used incorrectly or licked. It is safest to avoid using it unless your veterinarian specifically approves it.

• Environmental cleaning is an important part of treatment and should include disinfecting grooming tools, vacuuming carpets, and sanitizing areas where the infected dog frequently stays steps that also apply when managing other parasitic concerns like ear mites.

 

CBD Use in Dogs and Ringworm

CBD products are sometimes used in dogs for general wellness support, but current research on their effects on fungal infections like ringworm is limited. At this time, there is no strong scientific evidence showing that CBD can treat or eliminate ringworm in dogs.

 

Some studies suggest CBD may help support comfort or overall well-being in certain dogs, but these effects are not specific to skin infections and can vary depending on the individual animal. Because of this, CBD should not be considered a treatment option for ringworm or used as a substitute for veterinary care.

If you are considering natural CBD oil for dogs or CBD biscuits for dogs for your dog, it is best to consult a veterinarian first. A vet can help determine whether it is appropriate for your pet and provide guidance on safe use, including proper dosage and product quality considerations the VCA: Immune System Overview in Dogs is a helpful reference when evaluating wellness products.

 

 Related Article: "Can I Give My Dog Human CBD Oil? [Know The Difference]"

 

 

 

Final Thoughts

Ringworm is not life-threatening, but it can cause discomfort and spread easily to humans and other animals. Maintaining good hygiene, including regular bathing and grooming, can help reduce the risk of infection.

Recovery often depends on consistent treatment and environmental cleanliness. If symptoms persist despite home care, veterinary evaluation and treatment are necessary.

Using diluted apple cider vinegar, coconut oil, or other commonly used home care options may provide temporary relief, but they should not replace professional treatment when the infection is severe or persistent.

Learn more about ringworm care and related topics through trusted pet health resources, including guidance from the AKC: How to Boost Your Dog's Immune System.

 

Frequently Asked Questions

What is the best dog ringworm treatment?

The best dog ringworm treatment depends on the severity of the fungal infection. Most dogs need a combination of topical treatments, medicated shampoos, antifungal creams, and, sometimes, oral antifungal medication. A veterinarian may recommend oral medication if the ringworm infection has spread, there are multiple lesions, or other pets are affected. Ringworm in dogs can take several weeks to clear, so consistent treatment is important.

How do vets diagnose ringworm in dogs?

A veterinarian may diagnose ringworm through a physical examination, Wood’s lamp test, skin scrapings, fungal culture, or PCR testing that checks for fungal DNA. Since other diseases can also cause skin lesions, hair loss, scaly patches, and broken hairs, proper diagnosis helps confirm whether the affected dog truly has dog ringworm.

What are the common symptoms of ringworm in dogs?

Common clinical signs of dog ringworm include circular or patchy hair loss, scaly patches, broken hairs, inflamed skin, ringworm lesions, and crusty skin lesions. These affected areas may appear on the face, paws, tail, or ear tips. Some dogs may have mild symptoms, while other infected pets may show more noticeable irritation on the dog’s skin.

Is ringworm in dogs highly contagious?

Yes, ringworm is highly contagious and can spread easily through direct contact with an infected animal, infected pets, other animals, or contaminated objects. Ringworm spores and fungal spores can live on pet hair, grooming tools, bedding, hard surfaces, and vacuum bags. Family members, cats, other pets, and dogs with weak immune systems may be at higher risk.

How do you treat ringworm at home?

Home care may include antifungal shampoos, medicated shampoos, antifungal creams, and cleaning the environment to reduce environmental contamination. However, home care should not replace veterinary medicine, especially if the ringworm infection is spreading or the affected dog has many lesions. Always wear gloves when applying topical therapy or cleaning infected areas, and consider supporting recovery with vet-recommended probiotics for dogs as part of a broader wellness routine.