Why Is My Cat Overgrooming? Bald Patches, Stress Licking, and What to Do About It

Cats are famously fastidious. A healthy cat spends up to half of its waking hours grooming, and that meticulous licking keeps the coat clean, spreads protective oils, regulates temperature and simply feels good. So how do you know when normal grooming has tipped over into a problem? Usually you notice it not by watching the cat, but by finding the evidence: a suspiciously thin patch on the belly, a bald strip running down the inner thighs, short stubbly fur along one flank, or the near-constant slurp-slurp of a cat licking the same spot again and again. This is overgrooming, and it is one of the most commonly misunderstood problems in feline health.

What Overgrooming Actually Looks Like

The tell-tale sign is hair loss caused by the cat's own tongue rather than by the fur falling out. If you part the fur at the edge of a bald patch, the remaining hairs are broken off short and blunt — not shed cleanly at the root. The skin underneath is often intact but may be pink, sore or, in severe cases, broken and scabbed from repeated licking, chewing or "fur-mowing" with the back teeth. The classic locations are:

• The belly (ventral abdomen). A cat grooming its stomach bald is the textbook picture, sometimes called a "fur-mowed" or "stripe" pattern.
• The inner thighs and groin. Easy for a cat to reach and a very common target.
• The flanks and lower back. Especially the strip just in front of the tail.
• The forelegs and paws. Persistent licking here can leave the fur stained and thin.

Because cats often overgroom in private, many owners never actually see the behaviour — they just see the result and assume the fur is "falling out." Recognising that the cat is doing this to itself is the first important step.

A clear walk-through of what overgrooming is, the signs to look for, and the range of causes behind it.

It Is a Medical Problem Until Proven Otherwise

Here is the single most important thing to understand, because it overturns what most people assume. Overgrooming has a reputation as a "stress behaviour" — a nervous habit like a person biting their nails. In reality, the large majority of cases have a physical, medical cause. One frequently cited veterinary study found that in cats suspected of purely psychological overgrooming, more than three-quarters turned out to have an underlying medical reason once they were properly investigated. In other words, "my cat is just anxious" is usually the wrong first guess.

The common medical drivers are:

• Fleas and flea-allergy dermatitis. This is the number-one cause. A single flea bite can set off intense, itchy overgrooming in an allergic cat — and because cats groom the fleas away, you often never see the parasites themselves. Indoor-only cats are not exempt.
• Other allergies. Food allergies and environmental (atopic) allergies to pollen, dust or mould can all cause itchy skin that a cat licks raw.
• Parasites and skin infection. Mites, ringworm (a fungal infection) and bacterial or yeast infections all itch.
• Pain. This one is widely missed. Cats will often lick over a painful spot — arthritis in a hip, a healing wound, anal-gland trouble, or bladder pain from cystitis. A cat licking its lower belly bald can be signalling urinary discomfort, which is potentially serious. Localised licking over a joint may be arthritis.

This is why the advice from vets and behaviourists is unanimous: a cat that is overgrooming needs a veterinary check-up first. Trying to "calm the cat down" while a flea allergy or a painful bladder goes untreated simply prolongs the misery.

A vet explains how overgrooming is investigated and treated — including why older cats often lick because of pain rather than stress.

When It Genuinely Is Stress: Psychogenic Alopecia

Once your vet has ruled out the medical causes — through a skin examination, flea treatment trial, and sometimes skin scrapings, bloodwork or a food trial — you are left with the behavioural diagnosis: psychogenic alopecia. This is compulsive overgrooming driven by anxiety, where licking becomes a self-soothing ritual, much like a comfort habit. It is a "diagnosis of exclusion," meaning it is only confirmed after the physical causes have been eliminated, not assumed at the start.

The triggers are almost always about a cat's sense of security and territory being disturbed:

• A house move, new furniture, or a change to the cat's core territory.
• A new baby, partner, pet, or a change in your work schedule and the time you spend at home.
• Tension in a multi-cat household — competition over food, litter trays, resting spots or attention.
• Boredom and a lack of mental stimulation, especially in under-enriched indoor cats.
• The sight of a strange cat through the window setting off territorial anxiety.

How to Help a Cat That Overgrooms

Treatment follows the diagnosis. If there is a medical cause, treating it — rigorous year-round flea control, an allergy diet, pain relief for arthritis, treatment for a urinary problem — often resolves the licking on its own. For the behavioural cases, and as good practice for every cat, the goal is to lower stress and enrich the environment:

• Get flea control watertight first. Use a vet-recommended product on every animal in the home, year-round. This is the cheapest, highest-value step and rules out the most common cause.
• Add vertical space and hiding spots. Cat trees, shelves, window perches and covered beds let an anxious cat observe, retreat and feel safe.
• Play with intent. Daily interactive "hunting" play with a wand toy burns nervous energy and rebuilds a cat's confidence. Following a predictable routine — play, feed, settle — gives an anxious cat the security it is otherwise seeking through licking.
• Reduce resource competition. In multi-cat homes, provide one litter box per cat plus one spare, and spread out food, water and resting places so cats are not forced to compete.
• Consider pheromone diffusers. Synthetic facial pheromone products (such as Feliway) help some cats feel calmer during periods of change.
• Do not punish it. Scolding or spraying the cat raises stress — the very thing fuelling the behaviour — and teaches the cat to lick in secret. Redirect to play instead.

In stubborn behavioural cases, a vet may prescribe a short course of anti-anxiety medication to lower the cat's baseline stress enough for the environmental changes to take hold. Medication is a support for the behaviour work, not a substitute for it.

Cat behaviourist Jackson Galaxy on reading feline stress and building the routine, ritual and enriched environment an anxious cat needs.

The Bottom Line

Overgrooming is a symptom, not a diagnosis. The instinct to label it "just stress" is understandable but usually wrong — most cats that lick themselves bald are itchy, sore or unwell, and they get better once the real cause is found and treated. So resist the urge to guess. Book the vet visit, get the flea and pain angles ruled out, and only then turn to the calming, enriching, routine-building work that helps a genuinely anxious cat feel safe in its own skin again.

This article is general information, not veterinary advice. Any hair loss, bald patch, sore skin or sudden change in your cat's grooming should be checked by your vet to rule out a medical cause first.