Flea Allergy And Bacterial Infections

Since flea allergy is often intensely itchy, a veterinarian or veterinary dermatologist may prescribe medications such as cortisone (prednisone, corticosteroids) to provide more immediate itch relief. Antibiotics may also be necessary if a secondary bacterial infection is present.

Learn about the veterinary topic of Flea Allergy Dermatitis in Dogs and Cats. Find specific details on this topic and related topics from the Merck Vet Manual.

Allergens are antigens that cause type 1 hypersensitivity reactions, and an allergy is an exaggerated response to this stimulus. Over-reaction to antigen stimulation can manifest itself in an animal's skin. All pets can be affected to some extent by flea and fly bites...

Some dogs develop a secondary bacterial or yeast infection in the skin. When this occurs, appropriate antibiotics and shampoos must be used. Bear in mind that flea allergy often accompanies other types of allergy, especially atopic allergy.

Flea allergy dermatitis is an allergy, more specifically, a hypersensitivity reaction against the proteins in the fleas saliva. The dogs immune system causes an inflammatory reaction, leading to intense itching and scratching.

Flea allergy dermatitis is one of the three most pruritic skin diseases, along with food allergy and sarcoptic mange. It is characterized by often severe pruritus in both dogs and cats and often incessant grooming in cats.