Alergia ao Arroz em Cães: Sintomas, Diagnóstico e Alternativas Dietéticas

Rice allergy occurs but is less common than beef, dairy, chicken, wheat, or soy allergies in dogs.

Clinical Signs

• Cutaneous: Pruritus (face, paws, ventrum), erythema, recurrent otitis externa, pyoderma.
• Gastrointestinal: Vomiting, diarrhea, flatulence, weight loss.
• Respiratory: Rare; rhinitis, asthma-like.

Diagnosis

• Elimination diet trial (8–12 weeks): Novel protein (venison, duck, rabbit) + novel carb (potato, pea) OR hydrolyzed diet.
• Rechallenge with rice confirms.
• Serum IgE / intradermal testing — low specificity; not diagnostic alone.

Management

• Strict avoidance of rice (including rice bran, flour, syrup in treats/meds).
• Alternative carb sources: sweet potato, pumpkin, quinoa, oats (if tolerated), tapioca.
• Novel/limited ingredient commercial diets or balanced home-cooked (vet nutritionist).

Prognosis

Good with avoidance. May develop additional food allergies over time.

Veterinary dermatologist for refractory cases.