10 Diseases You Can Actually Get from Your Dog

2. Ringworm: Itchy, Contagious, and Not a Worm

Despite its name, ringworm is not caused by a worm. It’s a fungal infection that targets the skin, hair, or nails. Both dogs and humans can get it, and it spreads very easily.

How Humans Get Ringworm

Ringworm spreads through direct and indirect contact. Common ways include:

• Petting or grooming an infected dog.

• Touching contaminated items, such as brushes, clippers, collars, or bedding.

• Contact with spores on carpets, furniture, or clothing—since the fungus can survive for weeks outside a host.

This makes ringworm one of the most contagious infections people can catch from their pets.

Symptoms in Humans

Ringworm looks different depending on where it shows up. The most common signs are:

• Red, circular rash that forms a ring shape (often on arms, legs, or face).

• Itchy, flaky, or scaly skin that may blister or crack.

• Hair loss or bald patches when it affects the scalp.

• Thickened or discolored nails if the fungus spreads to nail beds.

While it’s uncomfortable and embarrassing, ringworm is rarely dangerous and usually clears up with antifungal treatment.

Prevention Tips

To reduce the risk of ringworm spreading between dogs and humans:

• Bathe and groom your dog regularly. Clean fur means fewer fungal spores.
• Disinfect grooming tools and bedding. Wash them in hot water and use antifungal sprays.
• Avoid sharing towels, brushes, or bedding with your dog.
• Seek veterinary care if you notice skin lesions, hair loss, or flaky patches on your pet.

Quick Fact: The CDC reports that ringworm infections are among the most common zoonotic skin diseases worldwide, particularly in households with pets.