Flea Allergic Dermatitis 

  • Flea allergic dermatitis is a common skin reaction due to allergies to fleas. 

  • Flea control and regular use of parasite treatments is integral to the management of flea allergic dermatitis 

  • When a cat has flea allergic dermatitis, they will be very itchy and will lick at their coat a lot. 

  • Flea’s most commonly bite in the warmer weather but they can affect animals all year round. 


Many cats will generally only experience a mild reaction to flea bites, however some individuals are allergic to the fleas saliva and they develop flea allergic dermatitis 


Cats are ‘secret groomers’ and will hide away when grooming themselves so owners will often not see their cats over grooming. A flea allergy secondary to an infestation of fleas will cause pets to groom excessively 


If you suspect your pet is itching more than normal, it is important to see your vet. 




  • Corticosteroids: corticosteroids form an important role in the treatment of flea allergic dermatitis when a cat first presents. They will help reduce how itchy your pet is feeling and make them more comfortable. 

  • Flea treatment: addressing the underlying cause is very important. In cats who have had flea allergic dermatitis, it is more important than every to ensure they keep up to date with flea treatment. Your vet will be able to advise you on the best choice. 

  • Flea treatment in the home: the majority of the flea lifecycle is not the adult fleas but the eggs and larvae which remain in the environment for example in the carpets or furniture. If you cat has presented with a flea infestation, your vet may advise you of a suitable product to use to treat the flea population in the home.