Condition guide Dogs

Allergies and atopic dermatitis in dogs

Allergies are one of the top reasons dogs see the vet. Environmental allergies (atopic dermatitis), flea allergy and food allergy all cause itching.

Last updated: October 2026 · 3 sources · see sources

Quick answerAllergies are one of the top reasons dogs see the vet. Cost: diagnosis typically runs $200–$600; ongoing treatment, per month: $50–$300 [1].

Signs to watch for

[2][3]

Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.

How vets diagnose it

Your vet rules out fleas and infections first. A strict food trial checks for food allergy, and allergy testing can guide immunotherapy. [2][3]

How it's treated

Treatment can include anti-itch medicines like Apoquel or Cytopoint, flea control, medicated baths, treating infections and allergy shots. [2][3]

Medicines your vet may mention: Apoquel, Cytopoint, Cyclosporine (Atopica). We don't list doses; your vet will decide what fits your pet.

What it costs to diagnose and manage

Typical US costs
ItemTypical US priceSrc
Diagnosis (exam and tests)$200–$600[1]
Ongoing treatment, per month$50–$300[1]
Ongoing treatment over a year (monthly range × 12)$600–$3,600[1]

These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.

Outlook

Allergies are usually managed for life rather than cured. Good control can make your dog much more comfortable. [2][3]

Common questions

What is allergies and atopic dermatitis in dogs?

Allergies are one of the top reasons dogs see the vet. Environmental allergies (atopic dermatitis), flea allergy and food allergy all cause itching.

What are the signs of allergies and atopic dermatitis?

Common signs include: scratching, licking paws, rubbing the face, red skin, ear infections, skin infections.

How do vets diagnose allergies and atopic dermatitis?

Your vet rules out fleas and infections first. A strict food trial checks for food allergy, and allergy testing can guide immunotherapy.

How is allergies and atopic dermatitis treated?

Treatment can include anti-itch medicines like Apoquel or Cytopoint, flea control, medicated baths, treating infections and allergy shots.

How much does allergies and atopic dermatitis cost to treat?

Diagnosis (exam and tests): $200–$600; Ongoing treatment, per month: $50–$300; Ongoing treatment over a year (monthly range × 12): $600–$3,600. Costs vary with severity, tests, your pet's size and where you live.

This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.

Sources (3) — tap to show
  1. RealVetCost – Allergies in dogs: symptoms, treatment & costs
  2. Merck Veterinary Manual (pet owner version) – Allergies
  3. Merck Veterinary Manual (pet owner version) – Itching pruritus