Common signs include chronic itching, recurrent ear infections, red or irritated skin, vomiting, or diarrhoea. These can also signal other conditions, so keep a symptom diary and consult your veterinarian for proper diagnosis. They may recommend dietary trials or tests rather than self-treating at home.

Look for limited-ingredient or novel-protein foods, hydrolyzed veterinary formulas, omega-3 supplements, and gentle skin-care products like hypoallergenic shampoos. Product choice depends on whether the pet is a cat or dog and on symptoms. For persistent or severe allergies, consult your veterinarian before changing diets.

Certain supplements — such as fish oil (omega-3), dermatological support complexes, and selected probiotics — can support skin and gut health and may reduce symptoms. They are supportive, not cures. Discuss any supplement with your veterinarian to ensure safety and proper dosing for your pet.

Consider a veterinary diet if a vet suspects food allergy or if your pet has severe, chronic symptoms unresponsive to over-the-counter options. Prescription diets are designed for diagnosis or management, so always follow your veterinarian's advice and schedule follow-ups to monitor effectiveness and nutritional balance.

Yes. Regular grooming, frequent vacuuming with HEPA filters, washing bedding in hot water, using hypoallergenic bedding, and controlling fleas can reduce environmental allergens. For seasonal or severe reactions, work with your veterinarian to identify triggers and develop a management plan rather than relying solely on store products.