Ringworm (dermatophytosis) is a major challenge in cat shelters, causing significant welfare impacts and contributing to euthanasia of treatable cats. Effective protocols dramatically improve outcomes.
Ringworm in shelters historically caused enormous unnecessary suffering — both from the infection itself and from policies of routine euthanasia that eliminated treatable animals. Modern shelter medicine has transformed this picture. Evidence-based protocols combining systemic antifungal treatment, topical therapy, and foster-based housing achieve high cure rates and dramatically reduce euthanasia of ringworm-positive cats. From a welfare perspective, the foster approach also removes affected cats from the stressful shelter environment, which improves immune function and speeds recovery. Ringworm causes genuine discomfort — itching, hair loss, and skin inflammation — but this suffering is time-limited with appropriate treatment. The welfare imperative is to treat rather than kill.