Allergies are now one of the leading reasons for veterinary consultations in dermatology. Just as in humans, the immune system of some dogs and cats can overreact to substances that are normally harmless and found in their environment or diet. Although allergies are rarely life-threatening, they can significantly affect a pet's quality of life and often require long-term medical management.
Allergic symptoms can vary widely. In dogs, allergies most commonly cause intense itching, skin redness, recurrent skin infections, excessive paw licking, and repeated ear infections. In cats, the signs may be more subtle and can include hair loss caused by excessive grooming, skin crusts, or localised itching.
There are three main categories of allergies. Atopic dermatitis is triggered by environmental allergens such as pollen, dust mites, or moulds. Food allergies result from an adverse reaction to certain ingredients, most often proteins. Finally, flea allergy dermatitis (FAD) remains one of the most common causes of itching in companion animals.
Diagnosing an allergy requires a methodical approach. Veterinarians first rule out other potential causes of itching, including parasites and certain infections. When a food allergy is suspected, a strict elimination diet lasting several weeks is often necessary.
Allergy testing may also be recommended to identify the allergens involved and determine whether allergen-specific immunotherapy may be appropriate.
Treatment options have evolved considerably in recent years. Depending on the type of allergy, veterinarians may prescribe medications to reduce itching and inflammation, recommend a specialised diet, or implement personalised immunotherapy. In most cases, the goal is to manage the condition rather than permanently cure it.
Early intervention often helps limit complications and significantly improves a pet's comfort. Owners should pay attention to signs such as excessive scratching, recurrent ear infections, or persistent skin lesions. Prompt veterinary assessment makes it possible to establish an accurate diagnosis and prevent the condition from worsening.
Allergies are often a chronic condition requiring regular veterinary visits, additional diagnostic tests, and sometimes lifelong treatment. This is why they are among the conditions most frequently covered by pet health insurance policies.
