Spotting the Symptoms of Ringworm on Your Dog: A Guide for Pet Owners

Spotting the Symptoms of Ringworm on Your Dog: A Guide for Pet Owners


As a pet owner, it’s important to be aware of the various health issues that can affect your furry friend. One of the most common skin conditions that dogs can develop is ringworm. Despite its name, ringworm is not caused by a worm but rather a fungus that can infect the skin, hair, and nails of both humans and animals. In this article, we’ll discuss the symptoms of ringworm on dogs, how to check for it, and the various treatment options available.

What is Ringworm?

Ringworm is a fungal infection that can affect the skin, hair, and nails of both humans and animals. It’s caused by a group of fungi known as dermatophytes, which thrive in warm, moist environments. Dogs can contract ringworm from other infected animals, contaminated soil, or even from humans. Certain breeds, such as Terriers and Bulldogs, are more susceptible to ringworm than others.

Symptoms of Ringworm on Dogs

The symptoms of ringworm on dogs can vary depending on the severity of the infection. Here are some of the most common symptoms to look out for:

Skin Lesions – Ringworm can cause circular lesions on the skin that may be red, scaly, or crusty. These lesions can be itchy and may appear anywhere on the body.

Hair Loss – Infected dogs may experience hair loss in the affected areas. This can result in bald patches or a thinning coat.

Itching and Scratching – Ringworm can cause intense itching and scratching, which can lead to further skin irritation and infection.

Crusty or Scaly Skin – In some cases, ringworm can cause the skin to become dry, crusty, or scaly.

Circular Patches – Ringworm lesions often have a circular shape, with a raised, red border and a clear center.

Redness and Inflammation – Infected areas may be red, inflamed, and warm to the touch.

How to Check for Ringworm on Your Dog

If you suspect that your dog may have ringworm, there are several ways to check for it:

Visual Inspection – Check your dog’s skin for any circular lesions or bald patches. Look for redness, inflammation, and scaling.

Black Light Test – Some types of ringworm will fluoresce under a black light. Your veterinarian can perform this test to confirm a diagnosis.

Fungal Culture Test – A fungal culture test involves taking a sample of the infected skin or hair and growing it in a laboratory. This can help identify the specific type of fungus causing the infection.

Treatment for Ringworm on Dogs

Fortunately, ringworm is a treatable condition. Here are some of the most common treatment options:

Topical Medications – Antifungal creams, ointments, and shampoos can be applied directly to the affected areas to help kill the fungus.

Oral Medications – In more severe cases, your veterinarian may prescribe oral antifungal medications to help clear up the infection.

Environmental Cleaning – It’s important to thoroughly clean your home and any areas where your dog spends time to prevent reinfection. This may involve vacuuming, washing bedding, and disinfecting surfaces.

Preventative Measures – To prevent ringworm from spreading to other pets or humans, it’s important to isolate infected animals and practice good hygiene. Wash your hands thoroughly after handling your pet, and avoid sharing grooming tools or bedding.

When to See a Veterinarian

If you suspect that your dog may have ringworm, it’s important to seek veterinary care as soon as possible. Your veterinarian can perform a thorough examination and recommend the best course of treatment. In general, you should see a veterinarian if your dog is experiencing any of the following:

Severe or widespread skin lesions
Hair loss or bald patches
Intense itching or scratching
Fever or lethargy
Underlying health conditions that may complicate treatment

Frequently Asked Questions

Can Ringworm Spread to Humans?
Yes, ringworm can be transmitted from dogs to humans. It’s important to practice good hygiene and seek medical attention if you suspect that you may have been exposed to the fungus.

Can Ringworm be Prevented?
While it’s not always possible to prevent ringworm, there are several steps you can take to reduce your dog’s risk of infection. These include practicing good hygiene, avoiding contact with infected animals, and keeping your dog’s environment clean and dry.

How Long Does it Take to Treat Ringworm?
The length of treatment for ringworm can vary depending on the severity of the infection. In general, treatment can take anywhere from several weeks to several months.

Can My Dog Get Ringworm Again?
Yes, dogs can get ringworm again if they are exposed to the fungus. It’s important to take preventative measures and monitor your dog’s health closely.

What Happens if Ringworm is Left Untreated?
If left untreated, ringworm can spread and cause more severe symptoms. It can also lead to secondary bacterial infections and other health complications. Early detection and treatment are key to a successful recovery.


Ringworm is a common fungal infection that can affect dogs of all breeds and ages. By being aware of the symptoms and taking preventative measures, you can help protect your furry friend from this uncomfortable and potentially serious condition. If you suspect that your dog may have ringworm, don’t hesitate to seek veterinary care. With the right treatment, your dog can make a full recovery and get back to enjoying life as a happy and healthy companion.

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