# Degenerative Myelopathy in Cats: Symptoms and Outlook Cats do not develop degenerative myelopathy the way dogs do. The classic disease that destroys the spinal cord in older German Shepherds and other breeds is linked to a specific gene mutation that cats do not carry. So if your cat is losing control of the back legs, the cause is almost certainly something else, and the outlook depends on what that cause turns out to be. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - True degenerative myelopathy is a dog disease. Cats are not affected by the same genetic condition, so a diagnosis of "degenerative myelopathy in cats" is not standard veterinary terminology. - When a cat drags or weakens in the hind legs, veterinarians call it paraparesis or paraplegia, and they look for a specific cause such as a tumor, a disk problem, an infection, or a metabolic disorder. - Diagnosis usually requires advanced imaging (MRI or CT) plus blood work, because the signs look similar across many different diseases [1][2]. - Some causes are treatable with surgery or medication, and some are progressive and permanent [2][3]. - Degenerative myelopathy in cats life expectancy is not a meaningful number, because the true disease does not occur in cats. Prognosis depends on the actual diagnosis your veterinarian makes. ## What Degenerative Myelopathy Actually Is Degenerative myelopathy is a slowly progressive disease of the spinal cord. It damages the long nerve tracts that carry signals between the brain and the limbs. In dogs, it is tied to a known genetic mutation and typically starts in the hind legs, causing wobbling, knuckling of the paws, and eventually paralysis. In cats, that specific disease is not recognized. The gene mutation responsible in dogs has not been shown to cause the same condition in cats. This is why you will not find a standard veterinary diagnosis of degenerative myelopathy in cats. What you will find is cats with similar signs from other causes. A cat who is weak, wobbly, or dragging the back legs has a spinal cord or nerve problem, and the job of your veterinarian is to find out which one. The list is long, and the diseases on it behave very differently. ## Degenerative Myelopathy Cats Symptoms: What Owners Notice The signs owners report are usually about movement and posture, not pain at first. Watch for: - A low, crouched posture in the hind legs, or a reluctance to walk [1] - A wide stance when standing still [1] - Wobbling or crossing of the back legs (ataxia) [1] - Dragging the tops of the paws or knuckling over - Weakness that gets worse over weeks to months - Trouble jumping onto furniture or using the litter box - Pain at the spine, the base of the tail, or the neck [1][4] - In some cats, weakness in all four limbs, not only the back legs [3] The pattern matters. A problem in the lower back often affects only the hind legs. A problem in the neck can affect all four limbs and may come with balance problems or a head tilt [3]. Your veterinarian uses these patterns to narrow down where the trouble is. ## Causes and Risk Factors Because cats do not get the true degenerative disease, the real question is what else causes progressive hind limb weakness. Documented causes in cats include: **Spinal tumors.** A rare bone tumor called giant cell osteosarcoma can grow from the vertebrae and press on the spinal cord, causing progressive weakness in the back or front legs [2]. Lymphoma can also affect the spinal cord and cause back pain, a low hind limb posture, a wide stance, and wobbling [1]. **Vascular malformations.** Abnormal blood vessel growth near the spine can compress the cord and cause one-sided weakness and neck pain that may come and go [4]. **Structural problems at the skull base.** Some cats are born with abnormalities where the skull meets the neck, which can cause weakness in all four limbs and balance problems [3]. **Metabolic and nutritional disease.** Rare inborn errors of metabolism can damage the nervous system and cause progressive weakness, vision problems, and seizures [5]. **Viral and developmental causes.** Infection with feline panleukopenia virus before birth can leave a kitten with a permanently underdeveloped cerebellum, causing lifelong wobbling [6]. **Other nerve and muscle conditions.** Paroxysmal dyskinesia causes episodes of abnormal posture and movement, but the neurologic exam between episodes is normal [7]. This is different from the steady decline seen with spinal cord compression. Age and breed matter less than the specific disease. Some of these conditions appear in young cats, and some in older cats [1][2][4]. ## How Veterinarians Diagnose the Problem Your veterinarian starts with a full neurologic exam. They watch how your cat stands and walks, test the spinal reflexes, check pain sensation, and feel the muscles for wasting [8]. Where the problem sits along the spine changes which reflexes are abnormal and how strong they are [8]. The location of the damage guides everything. The closer a nerve injury is to the muscle, the better the outlook for recovery, so pinpointing the exact site is a priority [8]. Muscle wasting can show up within days when a nerve connection is lost [8]. If the exam points to the spinal cord, your veterinarian will likely recommend advanced imaging. MRI is the usual choice. It can show a mass pressing on the cord, swelling, fluid buildup, or a malformation [1][2][3][4]. In one reported case, MRI showed a mass arising from a vertebra that was compressing more than half of the spinal cord's width [2]. Blood work and urine tests help rule out metabolic causes. A kitten with progressive neurologic signs may need testing for vitamin B12 levels and unusual organic acids in the urine, which can point to a rare metabolic disorder [5]. In some cases, a sample of tissue is needed. Cytology or a biopsy after surgery confirms what the mass actually is [2][4]. Electromyography, which measures electrical activity in muscles, can help locate nerve damage when it is done 7 to 10 days after an injury [8]. ## Treatment Options Treatment depends entirely on the diagnosis. There is no single treatment for "hind leg weakness" in cats. **Surgery.** Tumors and malformations that press on the spinal cord are often treated by removing the compressing tissue. Cats with vertebral tumors have undergone dorsal laminectomy, which removes part of the vertebra to relieve pressure [2]. Cats with skull base abnormalities have been treated with custom titanium plates to stabilize the joint, and both cats in one report improved after surgery [3]. A vascular malformation was surgically removed, and the cat improved before the lesion regrew a year later and needed a second surgery [4]. **Medication.** Inflammation, pain, and some infections are managed with drugs. Your veterinarian calculates every dose from your cat's weight and health, so never use a dose meant for another pet or a human. **Supportive care.** Cats with weak hind legs need help with litter box access, soft bedding, and safe footing. Physical therapy and weight management can help maintain strength. **Dietary and metabolic treatment.** When a metabolic disorder is the cause, treatment targets the underlying problem. In one reported kitten with a rare metabolic disease, dietary changes, vitamin supplementation, and seizure medication were tried, but the neurologic decline continued [5]. ## Degenerative Myelopathy in Cats Life Expectancy and Long-Term Outlook This is the question most owners ask, and the honest answer is that there is no standard life expectancy for degenerative myelopathy in cats, because cats do not get that disease. What matters is the diagnosis your cat actually receives. For cats with a treatable cause, such as a tumor that can be removed or a joint that can be stabilized, the outlook can be good. Cats in reported cases regained some function after surgery, though some neurologic signs persisted [3]. One cat improved after surgery for a vascular malformation, then declined a year later when the lesion returned [4]. For cats with a progressive metabolic disease, the outlook is often poor. In one reported case, neurologic deterioration continued despite treatment and the cat was eventually euthanized [5]. A cat with a severe birth defect of the cerebellum may have a permanent disability that does not improve [6]. Several factors shape the outlook: | Factor | Better Outlook | Worse Outlook | |---|---|---| | Cause | Treatable tumor, structural problem | Progressive metabolic disease, widespread cord damage | | Speed of onset | Slow, stable | Rapid decline | | Pain sensation | Present | Absent | | Response to treatment | Improves after surgery or medication | Keeps getting worse | | Number of limbs affected | One limb or hind legs only | All four limbs | Pain sensation is a major marker. When a limb has no deep pain sensation, the nerve damage is severe, and recovery becomes much less likely [8]. Your veterinarian will test this carefully. Long-term management focuses on quality of life. That means keeping your cat clean, comfortable, and able to reach food, water, and a litter box. It also means regular rechecks so your veterinarian can adjust the plan as things change. If your cat also has other age-related conditions, such as heart or kidney disease, those need to be managed alongside the neurologic problem. You can read more about [Hypertrophic Cardiomyopathy in Cats](/knowledge/veterinary-medicine/clinical-methods/hypertrophic-cardiomyopathy-in-cats) and [Symptoms Of Kidney Disease In Senior Cats](/knowledge/veterinary-medicine/symptom-guides/symptoms-of-kidney-disease-in-senior-cats) if your cat has multiple health issues. ## Prevention You cannot prevent a disease that cats do not get. What you can do is reduce the risk from the conditions that actually cause hind limb weakness in cats. - Keep your cat indoors and up to date on vaccines, since feline panleukopenia virus can cause permanent neurologic damage when a kitten is infected before birth [6]. - Spay or neuter your cat and keep regular wellness visits, because early detection of tumors and metabolic problems gives you more options. - Watch for changes in gait, jumping ability, and litter box use, and report them promptly. - Keep your cat at a healthy weight to reduce strain on the spine and joints. - Ask your veterinarian about screening if your cat has a known breed or family risk for a neurologic condition. ## Limitations and When to Contact a Veterinarian Not every weak cat has the same problem, and only a veterinarian who examines your cat can determine the cause and the right treatment. **Contact a veterinarian the same day if your cat:** - Suddenly cannot use the back legs - Drags a limb or knuckles over on the paw - Cries out when you touch the spine or tail - Stops using the litter box or cannot posture to urinate **Go to an emergency clinic now if your cat:** - Cannot urinate or has a hard, distended belly - Has lost the ability to feel the toes on a limb - Is struggling to breathe or has sudden weakness in all four limbs - Has a seizure that lasts more than a few minutes or repeats **Schedule a routine visit if your cat:** - Is gradually getting wobbly over weeks - Hesitates to jump or climb stairs - Has a change in the way the back legs look or move ## Frequently Asked Questions ### Can cats get degenerative myelopathy? No, cats do not develop the classic degenerative myelopathy seen in dogs. That disease is tied to a gene mutation that has not been shown to cause the same condition in cats. Cats can develop other spinal cord diseases with similar signs, and those need their own diagnosis. ### Is hind leg weakness in cats always permanent? No, it depends on the cause. Some cats improve after surgery to relieve spinal cord compression, and some regain function with medication and supportive care. Other causes, such as progressive metabolic disease or severe birth defects, do not improve. ### How fast does spinal cord disease progress in cats? It varies widely. Some cats show a slow decline over months, while others deteriorate suddenly. In one reported case, a cat had a year of progressive weakness before a sudden worsening. Your veterinarian can track the pace with repeat exams and imaging. ### Can a cat live comfortably with weak back legs? Many cats can, with adjustments. Provide low-sided litter boxes, soft bedding, non-slip flooring, and easy access to food and water. Regular veterinary rechecks help catch new problems early and keep your cat comfortable. ### Does my cat need an MRI? Not always, but MRI is often the best way to see what is pressing on the spinal cord. Your veterinarian will recommend it based on the neurologic exam and your cat's overall health. Blood work and other tests may come first to rule out metabolic causes. ## Related Articles - [Symptoms Of Kidney Failure In Elderly Cats](/knowledge/veterinary-medicine/symptom-guides/symptoms-of-kidney-failure-in-elderly-cats) - [Symptoms Of Kidney Disease In Senior Cats](/knowledge/veterinary-medicine/symptom-guides/symptoms-of-kidney-disease-in-senior-cats) - [Hypertrophic Cardiomyopathy in Cats](/knowledge/veterinary-medicine/clinical-methods/hypertrophic-cardiomyopathy-in-cats) - [Symptoms Of Kidney Disease In Old Cats](/knowledge/veterinary-medicine/symptom-guides/symptoms-of-kidney-disease-in-old-cats) - [Symptoms Of Kidney Failure In Old Cat](/knowledge/veterinary-medicine/symptom-guides/symptoms-of-kidney-failure-in-old-cat) - [Signs Of Kidney Disease In Old Cats](/knowledge/veterinary-medicine/clinical-methods/signs-of-kidney-disease-in-old-cats) - [Intervertebral Disc Disease in Cats: Signs and Treatment](/knowledge/veterinary-medicine/senior-and-chronic-care/intervertebral-disc-disease-cats) - [Myasthenia Gravis in Cats: Symptoms, Treatment, and Prognosis](/knowledge/veterinary-medicine/senior-and-chronic-care/myasthenia-gravis-cats-symptoms-treatment) - [Stroke in Cats: Symptoms, Causes, and Survival Rate](/knowledge/veterinary-medicine/emergency-and-first-aid/stroke-in-cats-symptoms) ## References 1. [MRI and histopathology of primary extranodal spinal cord T-cell-rich B-cell lymphoma in a cat](https://pubmed.ncbi.nlm.nih.gov/41612999/). JFMS open reports, 2026. 2. [Case Report: Feline spinous process giant-cell osteosarcoma](https://pubmed.ncbi.nlm.nih.gov/42146039/). Frontiers in veterinary science, 2026. 3. [Surgical stabilization of craniocervical junction abnormalities in two cats](https://pubmed.ncbi.nlm.nih.gov/41320251/). The Journal of veterinary medical science, 2026. 4. [Case Report: Repeated imaging and surgical treatment of a vascular hamartoma arising from the cervical vertebral column of a cat](https://pubmed.ncbi.nlm.nih.gov/42781373/). Frontiers in veterinary science, 2026. 5. [Clinical, magnetic resonance imaging, and neuropathological features of suspected inborn methylmalonic aciduria in a domestic shorthair kitten](https://pubmed.ncbi.nlm.nih.gov/42501363/). Journal of veterinary internal medicine, 2026. 6. [Cerebellar hypoplasia in an Amur leopard cat (Prionailurus bengalensis euptilura) with feline panleukopenia virus infection](https://pubmed.ncbi.nlm.nih.gov/41613563/). Veterinarni medicina, 2025. 7. [Phenotypic characteristics of paroxysmal dyskinesia in 25 cats](https://pubmed.ncbi.nlm.nih.gov/41881802/). The Journal of small animal practice, 2026. 8. [Leg Paralysis in Cats - Cat Owners](https://www.merckvetmanual.com/cat-owners/brain-spinal-cord-and-nerve-disorders-of-cats/leg-paralysis-in-cats). Merck Veterinary Manual. ## 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)