Diagnostic Criteria for Food-Induced or Environmentally Induced Feline Atopic Skin Syndrome

Pruritus at onset

At least two of the following skin reaction patterns:

• miliary dermatitis

• symmetrical alopecia (self-inflicted alopecia)

• head and neck pruritus

• eosinophilic skin diseases

At least two affected sites

Miliary dermatitis as a dominant pattern

Eosinophilic dermatitis, symmetrical alopecia, or erosions or ulcerations on the head, face, lips, ears, or neck

Nonsymmetrical alopecia on the rump, tail, or hindlimbs

Symmetrical alopecia on the abdomen

Absence of:

Erosions or ulcerations on the forelimbs

Lesions on the sternum or axilla

Nodules or tumors