Dog Allergy Calculator
Identify likely allergy triggers and get management guidance for your dog
Select all symptoms your dog is experiencing:
When do symptoms occur?
Dog Allergies: The 4 Main Types
Dog allergies fall into four main categories: environmental/atopic (pollen, dust mites, mould), food allergies (protein source reactions), flea allergy dermatitis (the most common), and contact allergies (cleaning products, fabrics). Our dog allergy calculator helps identify the most likely type based on your dog’s symptoms and timing.
Allergy Type Comparison
| Type | Key Symptoms | Pattern |
|---|---|---|
| Environmental (atopic) | Itching, paw licking, ear infections | Seasonal or year-round |
| Food allergy | GI upset + skin issues | Year-round, after diet change |
| Flea allergy | Intense itching near tail base | Seasonal (flea season) |
| Contact allergy | Localised skin reaction | After new product/environment |
FAQs
What is the most common allergy in dogs?
Flea allergy dermatitis (FAD) is the most common allergy in dogs worldwide. A single flea bite can trigger an intense allergic reaction in sensitised dogs. Year-round flea prevention is the most important preventive measure. If your dog is itchy near the tail base and lower back, rule out fleas first.
How long does a food allergy elimination diet take?
A minimum of 8-12 weeks of strict elimination diet is required to see a meaningful reduction in food allergy symptoms. Skin symptoms take longer to resolve than GI symptoms. During this period, no treats, table scraps, flavoured toothpastes, or chews are allowed — even small amounts of the trigger protein can invalidate the trial.
Conclusion
Our dog allergy calculator helps identify likely allergy types based on symptoms and timing. Always follow up with your vet for accurate diagnosis. For diet management, use our food calculator and for general health tracking, our weight calculator.