Head pressing is a medical sign, not a mood. A cat that stands with its forehead against a wall, a door or the back of a sofa for more than 2 or 3 minutes, or does it twice in 24 hours, needs to be seen the same day. A cat pressing right now that cannot walk a straight line is an emergency with a 60-minute clock. There are 3 causes to work through, and all 3 are medical: forebrain disease, hepatic encephalopathy, and toxic or metabolic injury. None of them is anger, boredom, stubbornness or a behaviour problem, and no cat presses its head into a wall to make a point.
What head pressing looks like, and what it is not
Head butting is social. The cat pushes its cheek or forehead into a person, then rubs, purrs, and keeps moving. Head pressing is static: the cat faces a flat surface, eyes open or half closed, body still, for 2 to 30 minutes, and does not turn when called. Some cats press into corners, some into the water bowl, some into the back of a closed door. A cat that sleeps with its head on a cushion is not pressing. A cat that presses once after a fright and then eats dinner is probably not pressing either. The signs that matter are repetition within 24 hours, a duration over 5 minutes, or a second odd sign in the same week, such as circling or a head turn.
Cause 1: forebrain disease
The forebrain sits above the brainstem and runs behaviour, vision and conscious movement. A tumour, meningitis, encephalitis, stroke or head trauma there produces pressing before it produces weakness, because the circuits that tell the body where it is in space are the ones injured. Other signs arrive in clusters: seizures, circling to 1 side for hours, a head turn that persists, pacing at night, vision loss with pupils that still react to light, and a personality change owners describe as not himself. Meningioma is the most common brain tumour in cats and is usually found in cats over 10 years old, though it can appear at 4. An MRI answers the question; a CT scan shows bone better and soft tissue worse, so most neurologists request MRI first. A 3-week wait for a routine slot is a real risk when the pressing started 48 hours ago.
Cause 2: hepatic encephalopathy
When the liver cannot clear ammonia, the brain is the first organ to notice. A portosystemic shunt, cirrhosis or acute liver failure can all do it, and the pattern is distinctive: pressing, head droop, drooling, staring, blindness with normal-looking eyes, and seizures that come 1 to 2 hours after a high-protein meal. Many of these cats are young and underweight, or have a coat that has looked poor for 6 months. Bile acids are the screening test, fasting and 2 hours after a meal. Values under 15 µmol/L are normal in most labs; a post-prandial result over 25 µmol/L needs imaging. Ammonia over 100 µmol/L in a cat with signs is treated as an emergency. A cat with a shunt can crash 4 hours after a protein-heavy meal, which is why nobody should fast these cats for 24 hours to see what happens.
Cause 3: toxins and metabolic injury
Lead from old paint or a fishing weight, thiamine deficiency from weeks of cooked-fish or badly balanced raw food, metronidazole at high dose for 3 weeks or more, organophosphate flea dips, a permethrin spot-on meant for a dog, and ethylene glycol at 1 to 2 teaspoons all reach the brain, and several of them start with pressing. High blood pressure does the same: a systolic reading over 160 mmHg held for weeks damages small vessels, and the cat arrives with pressing, sudden blindness, or both. Any cat with pressing and a systolic over 180 mmHg should have its retinas checked the same visit. A toxin list at toxin lookup is faster than guessing which product was on the floor 2 days ago.
The 24-hour clock
Three timings organise the decision. Started under 24 hours ago, cat still eating: same-day appointment, no waiting for the weekend. Pressing now, unable to walk, or a seizure in the last hour: emergency, 60 minutes, and no food on the way in. Pressing stopped but happened 2 or more times in 24 hours: still same-day, because a sign that repeats inside 24 hours has a cause that will repeat. What changes the outcome is not how dramatic the pressing looks, it is how long it has been going on and whether the frequency is climbing. A cat that pressed for 30 seconds on Monday and 10 minutes on Thursday has a 72-hour story that a vet can work with.
What the vet will run
Expect 5 to 6 tests in the first visit, and expect the cheap ones first. Glucose and electrolytes take 10 minutes and rule out the reversible causes before anything else. Blood pressure takes 5 minutes and is skipped far too often in cats that are labelled neurological. Bile acids need a 12-hour fast, so the sample is usually taken at the start of the visit. An MRI needs 4 to 6 hours of fasting, 60 minutes of table time under anaesthesia, and a neurology review the next day. If the cat is stable, the whole workup fits inside 48 hours.
| Test | Fast (hours) | Chair time (min) | Result in (hours) | What it rules out |
|---|---|---|---|---|
| Glucose and electrolytes | 0 | 10 | 1 | hypoglycaemia, sodium shift |
| Blood pressure | 0 | 5 | 0 | hypertension over 160 mmHg |
| Bile acids | 12 | 15 | 24 | shunt, cirrhosis |
| Ammonia | 0 | 10 | 2 | hepatic encephalopathy |
| MRI brain | 4 | 60 | 24 | tumour, inflammation, stroke |
| CSF tap | 4 | 20 | 48 | meningitis, encephalitis |
What not to do tonight
- Do not punish, spray or startle the cat to snap it out of it.
- Do not crate it in a dark room and wait for morning.
- Do not use a dog flea product, ever: 1 tube of permethrin can kill a cat.
- Do not fast a cat for more than 12 hours without instruction if a shunt is possible.
- Do not wait out a 3-day weekend; 48 hours of pressing is 48 hours of brain tissue under pressure.
Five things to do in the next 60 minutes
- Film 30 seconds of the cat pressing, with the clock visible in the frame.
- Note the time of the first press and count how many times it happened in 24 hours.
- Check the gums, the pupils and whether the cat can walk 3 steps in a straight line.
- Remove any suspect product, plant or old painted object from the room.
- Call the clinic and say 4 words: head pressing, started X hours ago. If the cat also tilts its head or falls to 1 side, add that, and read the head tilt guide (head tilt) before you go so you can describe the direction.
Frequently asked
Is head pressing ever just a quirky habit?
A single episode in an otherwise normal cat that eats, plays and holds weight can be a one-off, but the habit explanation is used far too often. Pressing that repeats within 24 hours, lasts over 5 minutes, or comes with circling, head turn, vision loss or a seizure is a neurological sign until proven otherwise. The 3 causes are forebrain disease, hepatic encephalopathy and toxic or metabolic injury, and each one gets worse with waiting.
How fast does a pressing cat need to be seen?
Same day, meaning within 24 hours of the first episode, if the cat is still eating and walking. Immediately, within 60 minutes, if it cannot walk, has had a seizure in the last hour, or is pressing continuously right now. A cat that pressed twice in 24 hours and then stopped still needs a same-day visit, because the cause behind a repeating sign does not resolve on its own.
Can a cat with a liver shunt be treated, or is pressing the end?
A shunt is one of the more treatable causes. Bile acids and ammonia confirm it, ultrasound or CT maps the vessel, and many cats are managed medically with a protein-controlled diet plus lactulose, while some are surgical candidates. The pressing itself usually fades once ammonia falls. What decides the outcome is how quickly the encephalopathy is recognised, which is why a 12-hour fasting bile acid sample beats a week of watching at home.