A 9-year-old intact male golden retriever was presented to his primary veterinarian for a year-long history of nonseasonal pruritus and recurrent pyoderma. Physical examination showed erythema, abrasions, and alopecia in the skin but was otherwise unremarkable. Blood work (ie, CBC, serum chemistry profile, total thyroxine) results were within normal limits.

Dietary History

A comprehensive nutritional evaluation1 was pursued. The patient (71.7 lb [32.5 kg]) had a BCS of 5/9. The nutritional history noted the patient was eating an adult canine maintenance diet. After ruling out flea allergy, the veterinarian suspected food allergy and sent a serum sample for ELISA antibody testing. Rice, soy, and corn were identified as potential antigens. 

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