5 Skin Conditions You Can Contract From Your Pets

Our pets are loyal companions, always ready to offer comfort with a wagging tail or a gentle nuzzle. We cherish them so deeply that we often share our living spaces—and even our beds—with them.

However, before you cozy up with your furry friend, consider this: Pets can carry numerous parasites and pathogens that may pose health risks. As they explore outdoors, cats and dogs can pick up bacteria, fungi, and various parasites like ticks, mites, and worms, which they can transmit to you. These organisms can cause zoonotic diseases, illnesses transferred from animals to humans. In some cases, pets can even contract germs from you and pass them back.

This article will explore various skin infections that can be transmitted from your pets and provide tips on how to prevent your beloved companion from causing you an uncomfortable rash.

5. MRSA and Other Bacteria

You’ve likely heard of the notorious MRSA infection, which has been increasingly prevalent in hospitals and communities. Caused by the Staphylococcus aureus (staph) bacteria, even a minor cut can escalate into a severe infection. Alarmingly, some staph infections are resistant to many standard antibiotics.

Staph infections usually spread through human contact. You can contract one by sharing personal items, such as razors or towels, with an infected person, especially if you have an open wound. MRSA initially appears as small, pimple-like bumps on the skin. Without treatment, the infection can worsen, spreading to deeper tissues and potentially affecting the bloodstream and organs.

Humans can also acquire MRSA from their cats and dogs, but only after these animals contract the bacteria from humans. Staphylococcus bacteria thrive in the animal’s mouth. If the animal bites a person, the bacteria can enter the body through the bite wound.

Staphylococcus isn’t the sole bacteria that can be transmitted through animal bites. Approximately 30 different bacteria, including Pasteurella, Streptococcus, Fusobacterium, and Capnocytophaga, can be passed from pets to humans, all of which have the potential to cause severe infections.

To prevent bites and subsequent infections—whether staph-related or otherwise—it’s advisable to avoid unfamiliar dogs or cats. If bitten, clean the wound immediately with soap and water or an antiseptic. Contact your doctor, particularly if the wound is deep, as antibiotics may be necessary for treatment.

4. Ringworm

You may have come across the term ringworm. Contrary to its name, ringworm isn’t caused by a worm but by a fungal infection known as a dermatophyte.

Ringworm is highly contagious and can spread rapidly among people in close environments, such as locker rooms or daycare centers. The fungus can also transfer from pets, particularly cats, to humans.

If you contract ringworm, you’ll notice red, often circular rashes on your skin. Dermatophytes thrive in warm, moist areas, so these itchy, scaly rashes commonly appear in sweaty regions like the groin (referred to as jock itch), feet (known as athlete’s foot), and scalp. Scalp ringworm can cause bald patches alongside the rash.

Ringworm can be transmitted by touching the skin or fur of an infected animal. Both dogs and cats, especially young ones, can carry the fungus.

While a ringworm vaccine exists for cats, it isn’t the most reliable prevention method. If you observe any hairless patches on your pet’s skin, consult a veterinarian for a proper diagnosis.

If you contract ringworm, using a topical antifungal cream or lotion typically resolves the infection. For more severe cases, your doctor may prescribe an oral antifungal medication.

3. Cheyletiellosis and Scabies

Mites are small, spider-like creatures related to ticks. They can transmit diseases as they feed on the blood of their hosts.

The mites responsible for cheyletiellosis, also known as cheyletiella mange, are often found in kennels and pet stores. Pets can pick them up and bring them home, leading to a red, bumpy rash and white flakes that seem to move (earning it the nickname "walking dandruff"). These mites can also infect humans, causing a rash on the arms, torso, and buttocks.

To eliminate the mites, wash your pet weekly for six to eight weeks with a pyrethrin-based shampoo (commonly used for lice treatment). Additionally, treat all pet bedding with a spray. Once your pet is treated, the rash should disappear.

The Sarcoptes scabiei mite is responsible for sarcoptic mange, commonly referred to as scabies in humans. These tiny pests burrow under your pet’s skin, causing hair loss and intense itching. Small red bumps appear on the animal’s skin, which can become infected due to excessive scratching.

If these mites transfer to a human, they cause an intensely itchy, pimple-like rash that can persist for weeks. To treat the rash, a doctor may prescribe a scabicide ointment or cream to eliminate the mites. Additionally, wash all towels, bedding, and clothing in hot water or seal them in a plastic bag for at least 72 hours.

Sarcoptic mange in pets can be treated with an organophosphate dip, though the process is uncomfortable. To prevent the condition, use a monthly medication that safeguards against the mites. Also, treat your pet’s bedding, as these resilient mites can survive for days without a host.

2. Hookworms

When hookworms attach to the lining of your pet’s intestine and begin feeding, they can cause severe gastrointestinal issues, such as intense diarrhea, vomiting, and anemia. In some cases, hookworm infections can be fatal for animals.

Pets can contract hookworms by consuming contaminated food or water or by sniffing soil containing hookworm larvae. Once inside the intestines, the worms feed on the animal’s blood and lay eggs, which are expelled in the feces. Humans can also become infected by coming into contact with these larvae.

Some hookworm species can penetrate human skin, leading to a condition called cutaneous larval migrans or "creeping eruption." This infection causes a red, itchy rash. In more severe cases, symptoms like abdominal pain, diarrhea, and anemia may occur, similar to those seen in infected pets.

Hookworms in dogs are treated with de-worming medications, often the same ones used for roundworms. These medications, typically administered monthly as a preventive measure, contain active ingredients like ivermectin and pyrantel pamoate.

Hookworm infections in humans are rare in the U.S. but more prevalent in poorer nations. To stay safe, always wash your hands with soap and water after handling your pet’s feces. If infected, your doctor can prescribe medications like albendazole or pyrantel pamoate for treatment.

1. Rocky Mountain Spotted Fever

Despite their tiny size, ticks are highly destructive. These eight-legged pests latch onto dogs and transmit bacteria as they feed. One such bacterium, Rickettsia rickettsii, causes Rocky Mountain spotted fever—a disease that, despite its name, has spread to both U.S. coasts.

Once Rickettsia rickettsii enters your pet’s bloodstream, it multiplies rapidly. Symptoms in dogs may include diarrhea, vomiting, red eyes, vision issues, or bleeding.

Dogs can indirectly transmit Rocky Mountain spotted fever to humans. The tick carrying the bacteria must bite a person for infection to occur. You can also contract the disease if you touch the tick while removing it from your dog and have an open wound.

In humans, Rocky Mountain spotted fever often presents with a distinctive red, spotted rash. Additional symptoms may include a high fever (ranging from 102 to 104 degrees Fahrenheit or 38.9 to 40 degrees Celsius), swollen joints, nausea, vomiting, difficulty breathing, and potential neurological issues. The condition can escalate to the point of requiring hospitalization, but antibiotics are effective in treating both pets and humans.

To avoid this serious illness, inspect your pet and yourself for ticks after spending time in wooded areas. Apply an insect repellent with DEET to your skin or permethrin to your clothing before heading outdoors. Wear long sleeves and pants, tucking the pant legs into your socks. Additionally, ensure your dog is current on flea and tick prevention medication.