Why the contact kill matters: Unlike oral flea treatments, Advantage II kills fleas through contact so they dont have to bite your cat to die. This is crucial for cats with flea allergy dermatitis (FAD) where even a single bite causes severe itching.
Vets use multiple approaches to treat a cats allergies. These can include allergy medication, flea prevention, a special diet, and other treatment methods.

Flea allergy dermatitis (FAD) is an allergic response to flea bites that causes some cats to have more severe skin problems than are usually seen with fleas. It occurs when a cat is allergic to specific allergens in flea saliva. For most cats, the presence of even multiple fleas will still lead to only mild itching and scratching.

Flea allergy dermatitis is a hypersensitivity disorder in which the affected individual is sensitive to the saliva in the bites of fleas. Diagnosis is based on history and clinical signs. Dogs develop itch and skin lesions on the caudal dorsum and tailhead; cats can develop itch and skin lesions on the head and neck, as well as the dorsum, tailhead, and inguinal region. Prevention and ...

Why Is Flea and Tick Treatment and Prevention Important for Cats? Fleas and ticks are known as ectoparasitesparasites that live on the outside of the host animal. Both fleas and ticks survive by taking a blood meal, which means they must bite their host to draw blood for food.
Diagnosing cats with allergiesThe best ways to avoid allergensWhat can I give my cat for allergies?
Flea prevention for cats (Long-term control). Can humans get fleas from cats? Common mistakes when treating fleas on cats. When to see a veterinarian. Signs of Fleas on Cats and Why Early Treatment Matters. Fleas are small, fast-moving parasites that feed on your cats blood.