Flea Allergy Dermatitis (FAD)
Some cats are particularly sensitive to flea saliva. As a result, some cats may end up suffering from an allergic reaction called flea allergy dermatitis, or FAD.1
With FAD, the flea’s saliva triggers immune responses in your cat. This causes skin irritation that can extend past the initial location of the flea bite. This may result in hair loss from scratching around your cat’s tail, belly, and inner thighs.
Signs of FAD include small, scab-like bumps on the skin, or even skin infections in some cases. This condition will continue until the fleas are controlled.