Skip to main content
Ringworm: Human to pet transmission

Ringworm: Human to pet transmission

Q: My son, a high school wrestler, and several of his wrestling friends have ringworm. I know cats are susceptible. Can my son give ringworm to our cat?

A: Yes. Ringworm, a fungal infection of the skin, hair or nails, is zoonotic, which means it’s a disease shared by humans, cats, dogs and other animals.

Ringworm—which is caused by a fungus, not a worm—go  its name because in humans, it often appears as a round, raised, pink, flaky lesion. Most cases of ringworm in cats and dogs are caused by Microsporum canis. Half the people exposed develop the disease.

People can infect their pets, and an animal that contracts ringworm can pass it to humans. Transmission may be direct or through contact with contaminated bedding, carpet, clipper blades or other surfaces. Soil is another source of infection.

The typical ringworm-infected cat develops patchy hair loss with skin crusting and, sometimes, itchiness. Occasionally, however, cats may carry the ringworm fungus and appear completely normal.

If you see changes in your cat’s coat or skin, or if your son’s ringworm disappears and then recurs, contact your veterinarian, who can test your cat, make a diagnosis and recommend treatment if it’s needed.


Lee Pickett, V.M.D. practices companion animal medicine. Contact her at askdrlee@insurefigo.com

Protect your pet from the unexpected with Figo Pet Insurance, rated “Best Pet Insurance” by Reviews.com since 2017.

woman holding dog in the snow

Baby, it’s cold outside! Time to break...

Two girls taking photo with dog using selfie stick

Keeping our dogs happy during the...

cat sits on woman's lap

As pet owners, we all enjoy having a...

girl sitting with her dog on street

At Figo, we talk a lot about how great...

Advertisement for pet insurance.

More From Figo Blog
Woman with dog looking at tablet

Since 2017 Americans have spent between $17...

Cat scratching on a cat post

You may have heard the phrase, “Cats can’t...

Puppy crate training in progress

There are many tools I utilize when training...

Labrador Retriever retrieving a blue frisbee from the yard

One of the best things about owning a dog is...

woman hugging her white cat affectionately

People tend to make broad generalizations...

Kristin Levine with dog

We recently had the opportunity to interview...