What it is
An allergy is the immune system's mistake: it takes a harmless substance for an enemy and sets off inflammation. In cats this is felt above all in the skin, which itches and reddens, while constant scratching and licking leave small sores and bare spots.
A seasonal allergy flares up at certain times of year, when there is more pollen in the air, while an allergy to food or house dust troubles a cat all year round. A food allergy can even develop to something the cat has eaten without trouble for a long time.
Cats like to groom in private, when nobody is home, so sometimes the first thing you notice is not the scratching but tufts of fur on the floor or a thinning coat on the belly. Itching wears on the mood too: an itchy cat can turn irritable or sleep restlessly.
Signs you may notice
- Scratches constantly
- Grooms too much
- Bald patches in the coat
- Small scabs on the skin
- Scratches ears or shakes head
- Vomiting or diarrhoea
A cat keeps scratching, especially its head, neck and ears, grooms too much, and develops bald patches, small scabs or reddened skin. With a food allergy, vomiting or diarrhoea sometimes join in.
When to see a vet
Book a visit if your cat scratches or licks for more than a few days, or develops bald patches, scabs or sores. Finding out what the cat is reacting to is a job for the vet.
For everyday care
These are everyday care products, not a treatment. Ask your vet before changing your cat's food.
This is general information, not veterinary advice. For your own cat's health, tests and treatment, see a vet.