22. Clinical Signs of Flea Allergy Dermatitis in Dogs

  1. Chiara Noli2,
  2. Aiden Foster3 and
  3. Wayne Rosenkrantz4
  1. Emmanuel Bensignor

Published Online: 25 OCT 2013

DOI: 10.1002/9781118738818.ch22

Veterinary Allergy

Veterinary Allergy

How to Cite

Bensignor, E. (2013) Clinical Signs of Flea Allergy Dermatitis in Dogs, in Veterinary Allergy (eds C. Noli, A. Foster and W. Rosenkrantz), John Wiley & Sons, Ltd, Oxford, UK. doi: 10.1002/9781118738818.ch22

Editor Information

  1. 2


  2. 3


  3. 4


Author Information

  1. Dermatology Referral Practice, Rennes-Cesson, France

Publication History

  1. Published Online: 25 OCT 2013
  2. Published Print: 20 DEC 2013

ISBN Information

Print ISBN: 9780470672419

Online ISBN: 9781118738818



  • acute lesions;
  • atopic dermatitis flares;
  • chronic lesions;
  • clinical signs;
  • dogs;
  • FAD;
  • pyotraumatic dermatitis


Despite the wide distribution of modern, effective flea control products around the world, flea allergy dermatitis (FAD) remains one of the most frequent dermatitides in dogs and cats in countries where fleas are endemic. The diagnosis of this condition is mainly based on the recognition of typical clinical signs, which include acute lesions and chronic lesions. The main cause of pyotraumatic dermatitis in dogs is considered to be FAD. This clinical presentation is mainly seen in dogs with dense coats. The role of fleas in atopic dermatitis flares should always be considered, and the efficacy of flea treatment carefully monitored as part of the long-term treatment of atopic dogs. When classical clinical signs are present the clinical diagnosis is easy; however, other causes of skin lesions on the dorsal trunk, such as cheyletiellosis or other allergic skin diseases, should also be considered.