Not every flaky cat has mites, and a lack of response should prompt a wider look. If there is hair loss in round patches, lesions on the face/ears, or multiple pets with patchy coat changes, ringworm in cats moves up the list and needs specific testing and household steps (Sheetal, 2024). If the main sign is scabbing over the rump with intense itch, flea allergy and feline miliary dermatitis may be more likely, even when fleas are rarely seen (Siak, 2013).
At home, call the veterinarian promptly if the cat becomes lethargic, stops eating, develops widespread redness, or has open sores from scratching. Kittens can dehydrate faster if skin disease is paired with poor appetite, and older cats may have other conditions that make skin changes more serious. A “not improving” note is most helpful when paired with documentation of exactly what was done and when, rather than a general sense that the dandruff is “still bad.”