# Facial Paralysis in Cats: Causes and What It Means Facial paralysis in cats happens when the nerve that controls the muscles of the face stops working properly. The result is a drooping ear, lip, or eyelid on one or both sides of the face. It is a sign, not a disease itself, so the real question is always what damaged the nerve. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Facial paralysis means your cat cannot move the muscles of facial expression, including the eyelids, lips, ears, and nose [1]. - One-sided (unilateral) paralysis is the most common form and often follows an ear infection, trauma, or an unknown cause [2]. - The most urgent risk is a dry eye that cannot blink, which can lead to a corneal ulcer and vision loss if untreated [2][3]. - Diagnosis usually starts with a full neurologic and ear exam, then may include imaging such as MRI to find the cause [1][4]. - Many cats improve once the underlying problem is treated, but some never regain full facial movement. ## What Facial Paralysis in Cats Actually Means The facial nerve is cranial nerve 7. It starts in the brainstem, travels through the skull near the ear, and then branches out to the muscles that let your cat blink, flatten its ears, move its lips, and wrinkle its nose [1]. When any part of that path is injured, the muscles it supplies go quiet. Veterinarians call this a lower motor neuron problem. The nerve cells that control facial movement sit in the facial motor nucleus in the brainstem, and their fibers run out through the petrous temporal bone and exit the skull through a small opening called the stylomastoid foramen before splitting into branches for the ear, eyelid, and cheek [1]. That long, winding route matters. Because the nerve passes so close to the ear and the brainstem, problems in those areas can pinch or damage it. That is why a cat with a drooping face often needs a careful ear exam and sometimes brain imaging. In total facial paralysis, your cat cannot move its eyelids, ears, lips, or nostrils at all. In partial facial paralysis, those muscles move less than normal [2]. Partial cases can be easy to miss at first. ## Signs Owners Notice First The signs depend on where and how badly the nerve is damaged, and one or both sides of the face can be affected [2]. Common things you may see: - An ear that droops or sits lower than the other - A drooping upper lip, sometimes with drool leaking from that corner of the mouth - Food or water falling out of the mouth while eating or drinking - Trouble blinking one eye, or an eye that stays partly open - A dull facial expression, especially when both sides are involved [2] When both sides of the face are paralyzed, the look can be subtle. Affected cats often drool and simply seem flat or expressionless instead of obviously lopsided [2]. Tear and saliva production can also drop on the affected side, leading to a dry eye and a dry mouth [2]. A dry eye is the complication that worries veterinarians most, because a cornea that cannot stay moist and protected can ulcerate. Depending on the cause, you may also see other neurologic signs such as incoordination, weakness in two or four legs, or a head tilt [2]. A head tilt with facial paralysis points strongly toward the ear or the brainstem as the source. If your cat is also pawing at its ears or holding its head tilted, see [Cat Shaking Head and Scratching Ears: Causes and Urgency](/knowledge/veterinary-medicine/vet-visit-decisions/cat-shaking-head-scratching-ears). If the eye looks odd in other ways, [Cat Third Eyelid Showing Why](/knowledge/veterinary-medicine/clinical-methods/cat-third-eyelid-showing-why) covers another common eye sign. ## What Causes Facial Paralysis in Cats? ### Ear Disease Ear infections are one of the most common reasons a cat's face droops. Infection or inflammation in the middle ear can damage the facial nerve as it passes through the skull near the ear canal. In one report, a cat with right-sided facial paralysis and Horner's syndrome was found to have bilateral otitis media with erosion of the right bulla on MRI [4]. That case shows how deep ear disease can reach the nerve. ### Trauma Rough handling, car accidents, and other injuries can injure the facial nerve directly [2]. Cats hit by cars are a classic example, especially when the injury is on one side of the head. ### Tumors Cancer near the nerve can cause paralysis. A malignant peripheral nerve sheath tumor was reported at the cerebellopontine angle in a cat, and that cat showed balance loss, a head tilt, and a ventral strabismus along with other neurologic signs [5]. Tumors in or around the ear canal and skull can do the same thing. ### Infection and Inflammation Cat scratch disease, caused by Bartonella henselae, is a rare but documented cause of peripheral facial nerve palsy. A case report described a child with confirmed cat scratch disease who developed facial palsy along with a mass lesion near the internal auditory meatus, and the signs resolved with antibiotics and corticosteroids [6]. This is uncommon, but it is one reason your veterinarian may ask about scratches or kitten exposure. ### Idiopathic Facial Nerve Paralysis Sometimes no cause is ever found. This is called idiopathic facial paralysis, and it is a diagnosis made after other causes are ruled out. Many of these cats improve over weeks to months, though some keep a permanent droop. ### Other Nerve Problems Not every droopy face is facial nerve paralysis. Some cats have weakness or reflex changes from spinal cord disease, which is a different problem entirely [7]. Your veterinarian's neurologic exam is what separates these conditions. | Cause | Typical clues | Main diagnostic step | |---|---|---| | Ear infection or middle ear disease | Head tilt, ear pain, discharge, Horner's syndrome | Otoscopic exam, imaging of the bulla [4] | | Trauma | Recent accident or injury, one-sided signs | Physical and neurologic exam [2] | | Tumor | Slow onset, other neurologic signs, mass on imaging | MRI and sometimes biopsy [5] | | Infectious or inflammatory | Fever, lymph nodes, possible scratch history | Blood tests and imaging [6] | | Idiopathic | No cause found after full workup | Diagnosis of exclusion [1] | ## How Veterinarians Diagnose Facial Nerve Paralysis in Cats Diagnosis starts with a hands-on exam. Your veterinarian will watch your cat's face at rest and ask you to note what you have seen at home. They will check the blink reflex, the ear canals, and the rest of the neurologic system, because the pattern of signs helps localize where the nerve is damaged [1]. Expect these steps: - A full neurologic exam to look for other deficits such as head tilt, incoordination, or limb weakness [2] - A thorough ear exam, including the ear canal and eardrum - Blood work to check for infection, inflammation, and general health - Imaging, often MRI, to look at the ear, the nerve path, and the brainstem [4][5] Imaging matters because the facial nerve runs through bone and near the brainstem, and problems there do not show up on a routine exam. In the ear flush case, MRI revealed bilateral middle ear disease and erosion of the bulla that explained the facial signs [4]. If your cat has a history of scratching or a kitten at home, your veterinarian may test for Bartonella or other infectious causes [6]. ## Treatment Options Treatment is aimed at the underlying cause, not at the paralysis itself [1]. - Ear disease: antibiotics, ear cleaning under veterinary guidance, and sometimes surgery for severe middle ear disease. One cat needed intensive care after an ear flush triggered severe swelling and airway obstruction, so these procedures are not trivial [4]. - Infection such as cat scratch disease: antibiotics and corticosteroids were used in the reported case, with gradual resolution of signs [6]. - Trauma: supportive care, pain control, and time. Some nerve injuries recover on their own. - Tumors: surgery, and referral to a specialist is common [5]. - Dry eye: artificial tears, ointments, and sometimes surgery. A tarsal gold weight implant has been used to restore eyelid motion in a cat with long-standing facial paralysis and a deep corneal ulcer [3]. Your veterinarian calculates every medication dose from your cat's weight and health. Never give human eye drops or leftover medications without asking first. ## Recovery, Outlook, and Long-Term Management The outlook depends almost entirely on the cause. Ear infections that are treated often improve. Idiopathic cases frequently get better over weeks to months. Tumors carry a more guarded prognosis. The eye is the part you will manage day to day. A cat that cannot blink needs help keeping the cornea moist. In one cat with four years of facial paralysis, a gold weight implant restored eyelid motion and the eye was still doing well at an 18-month recheck [3]. Practical long-term care includes: - Checking the eye daily for redness, cloudiness, or discharge - Keeping the face clean if drooling causes skin irritation - Softening food or raising the bowl if eating is messy - Recheck visits so your veterinarian can monitor the cornea Some cats keep a permanent droop even after the cause is treated. That is cosmetic in most cases, as long as the eye stays healthy and your cat eats and drinks normally. ## Prevention You cannot prevent every cause of facial paralysis, but you can lower the odds. - Treat ear infections early. Chronic ear disease is a leading and treatable cause. Watch for head shaking and scratching, and see [Cats Ears Twitching And Shaking Head](/knowledge/veterinary-medicine/clinical-methods/cats-ears-twitching-and-shaking-head) for early signs. - Keep your cat indoors or supervise outdoor time to reduce car accidents and fights. - Handle your cat gently to avoid neck and head injuries [2]. - Keep up with routine veterinary visits so lumps, ear disease, and neurologic changes get caught early. ## Limitations and When to Contact a Veterinarian This article cannot tell you what is causing your cat's signs. Only a veterinarian who examines your cat can do that, and individual cases always need professional evaluation. Contact a veterinarian the same day if: - Your cat suddenly cannot blink one eye - The eye looks red, cloudy, or has discharge - Your cat is drooling heavily or dropping food Go to an emergency clinic now if: - Your cat is having trouble breathing - Your cat cannot stand, walks in circles, or has a sudden head tilt with vomiting - There was a known trauma such as a car accident Schedule a routine visit if the droop came on slowly, your cat seems otherwise well, or you have noticed a mild change in the ear or lip position over days to weeks. ## Frequently Asked Questions ### Can facial paralysis in cats go away on its own? Sometimes it can, especially when the cause is idiopathic or a mild nerve injury. Many cats improve over weeks to months as the nerve heals. However, you still need a veterinary exam, because treatable causes like ear infections and tumors can look identical at home. ### Is facial paralysis in cats painful? The paralysis itself is not usually painful. The underlying cause may be, such as an ear infection or trauma. Watch for signs of pain like hiding, not eating, or pawing at the head, and call your veterinarian. ### Can a cat live a normal life with facial paralysis? Yes, many cats do well long term. The main ongoing concern is eye protection, since a cat that cannot blink is at risk for corneal ulcers. With eye care and regular rechecks, most cats adapt and eat and drink normally. ### Does facial paralysis in cats affect only one side? No, it can affect one or both sides. One-sided paralysis is more common and easier to spot because the face looks uneven. Both-sided paralysis is harder to recognize, and those cats often just drool and look dull [2]. ### Should I worry if my cat's eyelid is drooping? Yes, get it checked promptly. A drooping eyelid from facial paralysis means the eye may not close fully, which can lead to a dry cornea and ulcers. Early treatment protects your cat's vision. ## Related Articles - [Cat Choking Causes](/knowledge/veterinary-medicine/clinical-methods/cat-choking-causes) - [Cat Third Eyelid Showing Why](/knowledge/veterinary-medicine/clinical-methods/cat-third-eyelid-showing-why) - [Cat Shaking Head and Scratching Ears: Causes and Urgency](/knowledge/veterinary-medicine/vet-visit-decisions/cat-shaking-head-scratching-ears) - [Cats Ears Twitching And Shaking Head](/knowledge/veterinary-medicine/clinical-methods/cats-ears-twitching-and-shaking-head) - [Cat Third Eyelid Showing Sometimes](/knowledge/veterinary-medicine/clinical-methods/cat-third-eyelid-showing-sometimes) - [Why Was My Cat Choking](/knowledge/veterinary-medicine/clinical-methods/why-was-my-cat-choking) - [Cat Paralysis Symptoms: Facial and Full-Body Signs](/knowledge/veterinary-medicine/symptom-guides/cat-paralysis-symptoms) - [Sick Cat Face: What Facial Signs Mean](/knowledge/veterinary-medicine/symptom-guides/sick-cat-face-signs) - [Head Tilt in Cats: Causes, Vestibular Signs, and Treatment](/knowledge/veterinary-medicine/symptom-guides/head-tilt-in-cats) - [Toxoplasmosis in Cats: Neurological Symptoms, Cytology, Pregnancy Risks, and Veterinary Care](/knowledge/parasites/pet-parasites/toxoplasmosis-cats-neurological-symptoms-cytology-pregnancy-veterinary-care) ## References 1. [Facial Paralysis in Animals - Nervous System](https://www.merckvetmanual.com/nervous-system/facial-paralysis/facial-paralysis-in-animals). Merck Veterinary Manual. 2. [Facial Paralysis in Cats - Cat Owners](https://www.merckvetmanual.com/cat-owners/brain-spinal-cord-and-nerve-disorders-of-cats/facial-paralysis-in-cats). Merck Veterinary Manual. 3. [Tarsal Gold Weight Implant as a Surgical Treatment for Eyelid Akinesia Related to Facial Paralysis](https://pubmed.ncbi.nlm.nih.gov/40322836/). Veterinary ophthalmology, 2026. 4. [Unexpected upper airway obstruction after ear flushing in two cats](https://pubmed.ncbi.nlm.nih.gov/39986925/). Veterinary anaesthesia and analgesia, 2025. 5. [Malignant peripheral nerve sheath tumour of the cerebellopontine angle in a cat](https://pubmed.ncbi.nlm.nih.gov/38469679/). The Journal of small animal practice, 2024. 6. [A pediatric case with peripheral facial nerve palsy caused by a granulomatous lesion associated with cat scratch disease](https://pubmed.ncbi.nlm.nih.gov/28935172/). Brain & development, 2018. 7. [Review: spinal shock, crossed extensor reflex, and mass reflex in dogs and cats-a literature review, clinical observations and considerations](https://pubmed.ncbi.nlm.nih.gov/41737678/). Frontiers in veterinary science, 2026. ## Further Reading - [Merck Veterinary Manual: Cat Owners](https://www.merckvetmanual.com/cat-owners) - [Cornell Feline Health Center: Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information) - [American Veterinary Medical Association: Pet Care](https://www.avma.org/resources-tools/pet-owners/petcare)