Superficial and Deep Dermal Eosinophilic Inflammation: A Retrospective Study of Skin-Biopsy Specimens from Cats with Atopic Dermatitis, Food Hypersensitivity, or Flea-Bite Hypersensitivity

Abstract

This study was conducted to determine the depth of perivascular-to-interstitial eosinophilic inflammation in skin-biopsy specimens from 43 cats with allergic dermatitis: atopic dermatitis (14), food hypersensitivity (15), and flea-bite hypersensitivity (14). All cats had “miliary dermatitis” or “nonlesional pruritus” cutaneous reaction patterns. Dermal inflammation was both superficial and deep in 93% of the cats. There was no difference in histopathologic reaction pattern based on clinical diagnosis or clinical cutaneous reaction pattern.