Dermatophytosis (ringworm) is a highly contagious fungal infection causing significant welfare impacts in cats, particularly in shelter populations where outbreaks can be devastating.
Ringworm causes local skin irritation and hair loss, causing cats to scratch and groom affected areas excessively. More significantly, the condition historically led to catastrophic shelter outcomes - widespread euthanasia of affected animals due to the management burden and zoonotic risk. The development of effective shelter management protocols including lime sulfur dips, antifungal medications, and environmental decontamination has transformed ringworm from a death sentence to a treatable condition. Treatment requires weeks of consistent medication and handling, causing repeated stress from bathing and handling. However, the welfare case for treatment is clear when the alternative is euthanasia. Foster care during treatment reduces shelter stress and improves outcomes.