What It Is:
Ringworm is a highly contagious fungal infection of the skin, hair, and nails. Despite the name, it is not caused by a worm, but by dermatophyte fungi, most commonly Microsporum canis in cats.
Ringworm can affect cats of any age, but it is especially common in kittens, shelter cats, and those with weakened immune systems. It is also zoonotic, meaning it can spread to humans and other animals.
🐾 Common Symptoms
Symptoms of ringworm in cats can vary, and some cats show no signs at all while still spreading the fungus.
Visible signs may include:
- Circular areas of hair loss
- Red or crusty skin patches
- Scaly or flaky skin
- Broken hairs or brittle coat
- Thickened or discolored claws in some cases
- Itching (though not always present)
- Lesions on the face, ears, tail, or paws
Ringworm lesions may appear as round patches but can also be irregular or widespread.
🦠 Causes and Transmission
Ringworm is caused by fungi that live on skin and hair, feeding on keratin. It spreads through:
- Direct contact with an infected animal
- Contact with contaminated objects such as bedding, brushes, or furniture
- Fungal spores in the environment, which can survive for up to 18 months
Humans, especially children or those with compromised immune systems, can catch ringworm from cats. Other pets, including dogs and small animals, are also at risk.
🔍 Diagnosis
Because ringworm can mimic other skin conditions, diagnosis should be confirmed with testing.
Veterinary diagnostics may include:
- Wood’s lamp exam to detect fluorescence of some fungi
- Fungal culture from hair or skin samples
- Microscopic examination of plucked hairs
- PCR testing for rapid and accurate identification
Some forms of ringworm do not glow under a Wood’s lamp, so additional testing is often needed.
💊 Treatment
Treatment depends on the severity of infection and whether other pets or people are affected.
Options include:
- Topical antifungal medications such as miconazole or lime sulfur dips
- Oral antifungal medications such as itraconazole or terbinafine
- Medicated shampoos or sprays for widespread cases
- Environmental cleaning to remove spores
- Isolation of infected cats to prevent spread
- Regular rechecks to confirm resolution
Treatment typically lasts several weeks to several months, depending on response and environment control.
🩺 Prognosis
With proper treatment and environmental control, the prognosis is excellent:
- Most cats recover fully
- Reinfection is possible if spores remain in the environment
- Untreated ringworm may spread or become chronic
- Immunocompromised cats may need extended treatment
Cleaning the home thoroughly is as important as treating the cat.
💡 Cat Owner Note
Ringworm might sound scary, and the name doesn’t help, but with patience and proper care, it is very treatable. The biggest challenge is stopping it from spreading. Clean often, follow your vet’s plan, and don’t skip treatments, even if the skin starts to look better.
❓ Frequently Asked Questions About Ringworm in Cats
Can I catch ringworm from my cat?
Yes. Ringworm is zoonotic and can spread to humans. Wash hands after handling your cat and avoid close contact during treatment.
Does ringworm always itch?
Not always. Some cats do not itch at all, while others scratch constantly.
How is ringworm treated at home?
Treatment usually involves oral antifungals, medicated baths, and cleaning the environment. Always follow veterinary instructions.
How long does it take to cure ringworm?
Treatment may take four to twelve weeks, depending on severity and whether the environment is kept clean.
Do I need to throw away bedding or furniture?
Not usually. Thorough cleaning, vacuuming, and disinfecting with bleach solutions can remove spores.
Is ringworm dangerous?
It is not usually dangerous, but it is highly contagious and can be stubborn if not treated thoroughly.