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Why Is My Cat Scratching So Much?
Common causes of itchy skin in cats, from fleas to allergies, and when to get it checked.
Quick Answer
- Fleas are the single most common cause of itching in cats, even in cats that rarely go outside.
- Allergies, dry skin, and ear mites are also common, lower-risk causes.
- Ringworm causes itching and patchy hair loss and can spread to people, so it's worth knowing the signs.
- Persistent scratching that leads to sore or bald patches needs a vet's assessment.
Common Causes of Scratching and Itchy Skin in Cats
01 Fleas Most common
Fleas are by far the most common cause of itching in cats. Even indoor-only cats can pick up fleas, which can be carried in on clothing, other pets, or simply hop in through an open door or window.
Look for small dark specks ("flea dirt") in the fur, particularly around the base of the tail and neck, and tiny fast-moving insects on the skin.
02 Allergies
Cats can be allergic to flea saliva, certain foods, or environmental triggers such as pollen and dust mites. Allergic itching tends to be more generalised across the body rather than concentrated in one spot.
03 Ear Mites
Ear mites are tiny parasites that live in the ear canal and cause intense itching around the head and ears. Affected cats often scratch at their ears and shake their head more than usual, sometimes with a dark, crumbly discharge visible inside the ear.
04 Ringworm Can spread to people
Ringworm is a fungal skin infection, not a worm, and causes itchy, circular patches of hair loss, often with flaky or crusty skin. It's more common in kittens and cats with weaker immune systems.
Worth knowing: Ringworm can spread between cats and people, particularly children, the elderly, or anyone with a weakened immune system. Good hygiene and prompt veterinary treatment help keep this risk low.
05 Dry or Irritated Skin
Central heating, low humidity, or certain skin conditions can leave a cat's skin dry and flaky, leading to mild, generalised scratching without an obvious trigger.
06 Stress-Related Overgrooming
Some cats overgroom or scratch at themselves as a response to stress or anxiety, which can lead to thinning fur, particularly on the belly or inner legs, even when there's no underlying skin disease.
When to Contact Your Vet
- Scratching leads to broken skin, scabs, or bald patches
- You can see circular patches of hair loss, which may suggest ringworm
- Regular flea treatment doesn't seem to be resolving the itching
- Your cat is scratching at its ears, shaking its head, or seems uncomfortable around the face
- The itching is severe enough to disturb sleep or normal behaviour
How Pet Med Direct Can Help
Pet Med Direct stocks a range of flea and parasite prevention products to support regular, year-round protection, which is the most effective way to keep flea-related itching under control.
If your vet diagnoses a skin condition such as ringworm, an allergy, or ear mites that needs prescription treatment, Pet Med Direct can help with dispensing once your vet has issued a valid prescription.
Some treatments require a valid veterinary prescription. Pet Med Direct can only supply prescription medicines after the prescription has been checked. Always follow your vet's advice and the directions on the medicine label.
Frequently Asked Questions
Can indoor cats get fleas?
Yes. Fleas can be carried indoors on clothing, shoes, other pets, or by simply hopping in through an open door or window, so indoor-only cats aren't immune.
Is ringworm contagious to humans?
Yes, ringworm can spread between cats and people. It's usually mild and treatable in humans, but it's still worth taking sensible hygiene precautions and seeking veterinary treatment for the cat promptly.
How do I know if my cat has fleas rather than another skin problem?
Small dark specks of "flea dirt" in the fur, visible insects, and intense scratching around the tail base and neck are the most common signs, but a vet can confirm this if you're unsure.
Why is my cat scratching even though I use flea treatment?
This can happen if the treatment has lapsed, if there's an infestation in the home environment as well as on the cat, or if the itching is being caused by something other than fleas, such as an allergy.
Can stress really cause a cat to overgroom?
Yes. Cats can respond to stress or changes in their environment by overgrooming or scratching, which can lead to thinning fur even without an underlying skin condition.
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This this article is for informational purposes only and does not constitute veterinary advice.
If you are concerned with your dog’s health, please consult a qualified veterinarian.
If you are concerned with your dog’s health, please consult a qualified veterinarian.