A 6-year-old, 8-kg neutered male West Highland white terrier with intense pruritus was presented for evaluation.
History. The dog had a 5-year history of nonseasonal generalized pruritic skin disease that had previously improved with oral (prednisone) and injectable (dexamethasone and triamcinolone) glucocorticoids, as well as oral antibiotics (cephalexin). Two previous allergen-specific IgE serologic tests had been performed, and allergen-specific immunotherapy had been instituted without sustained clinical improvement. Royal Canin Hypoallergenic HP 19 (royalcanin.us) diet had been fed exclusively for the previous 12 months. Additional clinical signs included frequent soft feces (several times per week), flatulence, and increased defecation (3–4 times per day).
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