Is Flea Allergy Dermatitis Bad For Cats. Flea allergy dermatitis is a skin disease that affects the cats and dogs living in the house. Many cats are allergic to the secretions they leave behind when they bite the skin.
Affected pets can have an extreme allergic reaction to certain proteins in the flea’s saliva, which the flea injects into the pet’s skin during biting and feeding. Flea allergic dermatitis explained most cats find fleas itchy and irritating but for some they are a much bigger problem because they are allergic to the bites (or more specifically the flea’s saliva). In an allergic cat, just one bite can result in intense itching that can last for days.
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An allergy occurs when the cat's immune system overreacts or is hypersensitive to foreign substances called allergens. Flea allergy dermatitis is a hypersensitive reaction to proteins in flea saliva which it injects into the skin when it feeds. Flea allergy dermatitis is an allergic reaction to a flea bite that manifests in a pet’s skin. If your pet has a flea allergy, “even one or two fleabites can make your pet miserable,” says carol osborne, dvm, a veterinarian at chagrin falls veterinary center in chagrin falls, oh.