Fungal infections common in Florida
Florida's heat and humidity create ideal conditions for fungal infections. Several types affect dogs more here than in northern states.
Ringworm isn't a worm — it's a fungal infection that causes circular bald patches with crusty edges. Highly contagious to humans and other pets. Treated with topical antifungals plus prescription oral medication for severe cases.
Most Florida groomers will refuse to bathe a dog with suspected ringworm. The fungal spores survive on equipment for weeks and infect other dogs.
Yeast (Malassezia) is the most common Florida fungal issue. See our skin folds article — yeast is endemic in this climate.
Sporotrichosis is rarer but exists. Caused by a soil-dwelling fungus, contracted through skin wounds, usually from gardening or rural exposure. Causes ulcerated nodules that don't heal. Vet diagnosis and long-term antifungal treatment required.
Florida-specific risk factors: standing water, decaying vegetation (heavy after hurricanes), soil exposure, and the year-round warm temperatures that prevent the seasonal die-off seen up north.
Prevention: keep skin dry, treat wounds promptly, and avoid moldy environments.
If your dog has any unexplained skin lesion that's persisting more than 7 days, get a vet to evaluate. Fungal infections often look like bacterial infections but require different treatment.