Does anyone know if ringworm can cause itching in dogs? The dermatologist said it's highly unlikely and rare, but my dog has been suffering from a "mystery" skin illness that causes constant itching and fur loss, mainly in the face area, that no one can figure out. And I think this may be it. My cat's fungal culture came back positive for ringworm. My dog started itching about two months after I brought the cat home, a year and a half ago. What is the most common way to treat for ringworm in dogs? Just so I can be well-prepared for the vet appointment this afternoon. It seems different vets have different ways of treating this condition and my dog has potential liver dysfunction. Thanks!