Merck Manual

Please confirm that you are a health care professional

honeypot link
Professional Version

Allergic Rhinitis and Enzootic Nasal Granuloma in Cattle

By

John Campbell

, DVM, DVSc, Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan

Reviewed/Revised Dec 2022 | Modified Jun 2023

Allergic rhinitis is an uncommon disease of cattle that, when chronic, may lead to granuloma formation. The etiology is an allergic reaction to pollen or fungal spores. Clinical signs are seasonal, occurring in warm, moist conditions; they include rhinorrhea, sneezing, and a sudden onset of dyspnea. In the chronic stage, multiple granulomas may form on the mucosal surface of the nasal cavity. Cytologic examination of nasal discharge samples may reveal eosinophils.

Treatment should focus on removing the allergen or removing the animal from the allergen. Treatment with corticosteroids to block the hypersensitivity reaction is also a consideration.

quiz link

Test your knowledge

Take a Quiz!
iOS ANDROID
iOS ANDROID
iOS ANDROID
TOP