Ringworm is a highly contagious fungal skin infection — not a worm — common in kittens. Treatment costs $200-$600 over 2-4 months. It spreads to humans and other pets (zoonotic). In homes with kittens or immunocompromised people, aggressive treatment and environmental decontamination are essential.
Dermatophyte fungi, not worms. Microsporum canis causes ~90% of feline cases. Spreads via direct contact with infected animals or contaminated objects. Kittens, Persians, immunocompromised cats, and multi-cat homes are most susceptible. Spores survive 12-18 months in the environment.
Circular, scaly patches on face, ears, paws with reddish raised edges. Kittens often have widespread lesions. Many cats — especially longhaired breeds — are asymptomatic carriers, invisible but contagious. Nails may become brittle. Many cats show no symptoms at all.
Wood's lamp unreliable (only ~50% fluoresce). Fungal culture is gold standard ($80-$150, 7-21 days). Trichogram: fast but less sensitive ($50-$100). PCR: faster and more sensitive ($100-$200).
Topical: lime sulfur dips ($30-$60) or antifungal shampoo ($20-$40). Oral: itraconazole or terbinafine ($20-$60/month) for 4-8 weeks. Clip hair, decontaminate with dilute bleach (1:10), treat all pets. Continue until two negative cultures confirm resolution.
Diagnosis + 6-8 weeks of treatment + follow-up cultures. Multi-cat households: add $100-$200 per additional cat for treatment and follow-up.
Persians and other longhaired breeds are significantly overrepresented. Kittens (immature immune system) and cats with FIV, FeLV, or on immunosuppressive medications are at highest risk.
Treatment takes a minimum of 6-8 weeks; many cases require 3-4 months for complete resolution. Stopping treatment too early is the most common cause of relapse. Two negative cultures confirm resolution.
Quarantine new kittens/cats for 2 weeks. Check all cats from shelters or breeders. Ringworm is contagious to humans — wash hands after handling infected cats. Immunocompromised people should minimize contact with infected animals.
02/04
Diagnosis + 8-week treatment course + follow-up cultures.
Ringworm is covered as an illness by most policies. Includes diagnosis, oral/topical antifungals, and follow-up cultures. In multi-cat homes, each cat's policy covers its own treatment. Environmental decontamination supplies: not covered.
Any documented skin lesions or hair loss before enrollment may trigger denial if the insurer links it to pre-existing conditions — especially risky for Persians with ongoing skin issues. Enroll when your cat is healthy and lesion-free.
Shelter and breeder kittens often arrive with ringworm, before you get home. The standard 14-day illness waiting period means it's typically not covered. Enroll the day you bring your kitten home for coverage after the waiting period expires.
At $200-$600, ringworm is moderate-cost. With a $250 deductible, net reimbursement is modest. Annual deductibles (not per-incident) make claims worthwhile when combined with other illnesses.
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