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Skin and coat

Allergies (food, skin and environmental)

An allergy is an overreaction of the immune system to substances that are essentially harmless, such as pollen, house dust mites, moulds, flea saliva or an ingredient in food. In dogs it shows up mainly in the skin and ears, and constant itching wears a dog down and can open the way to skin infections. More than one trigger can be involved at once, so finding the cause takes patience.

Updated

11 breeds

What it is

Your dog's immune system is built to fight off real threats, but in an allergy it mistakes something harmless for an enemy. Each time the dog meets that trigger, the body releases substances that cause inflammation, and the skin reacts first, with heat, redness and itch.

Some allergies come and go with the seasons, as pollen does, while others, such as a reaction to house dust mites or a food ingredient, can trouble a dog all year round. A tendency towards allergies can run in families.

Living with an allergic dog means watching closely: in which months the scratching gets worse, what changed in the home, how the skin looks after a walk through long grass. Notes like these help your vet piece the picture together, and less itchy skin means calmer sleep, more play and a happier dog.

Signs you may notice

The dog licks or chews its paws, rubs its face on the carpet and scratches its armpits, belly and ears, and the skin in those places turns red. When food is the trigger, digestive upsets such as soft stools or vomiting can appear as well.

When to see a vet

Book a visit if your dog keeps scratching or licking for more than a few days, or if the skin turns red, starts to smell or the coat thins.

For everyday care

These are everyday care products, not a treatment. Ask your vet before changing your dog's food.

This is general information, not veterinary advice. For your own dog's health, tests and treatment, see a vet.

More conditions: Skin and coat

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