When to see a vet urgently
Seek emergency care immediately if your cat has any of the following:
- Sudden severe hind leg pain and an inability to walk.
- Rapidly spreading weakness or an inability to stand.
- Difficult breathing or an inability to swallow normally.
- Dragging a limb or an inability to urinate after an injury.
Do not regard sudden paralysis as an ordinary consequence of diabetes at home. It may also be associated with a blood clot or injury. You can find a vet near you.
Overview
Peripheral neuropathy develops when the nerves' myelin sheaths or axons are damaged. This disrupts impulse transmission to muscles and internal organs. In a cat, one nerve may be affected (mononeuropathy) or several at once (polyneuropathy).
An axon is the long part of a nerve cell that carries signals. Myelin forms an insulating structure around it and helps signals travel. Damage may affect nerves controlling movement, sensation or organ function. Not every neuropathy therefore appears only as hind leg weakness.
Neuromuscular disease is a broader term: weakness can also arise at the junction between nerve and muscle or within the muscle itself. These conditions can resemble one another. A balance system or central nervous system disorder can also make a cat walk unsteadily without peripheral neuropathy.
The best-known form is diabetic neuropathy, in which the hind legs of a cat with chronic diabetes become weak. Toxic, inflammatory, traumatic and inherited forms also occur.
Diabetic neuropathy is a familiar example, but the pattern of symptoms alone does not establish its role. Diabetes-related nerve damage can cause gradually developing weakness in both hind legs. However, pain in one limb or sudden paralysis needs separate investigation even in a cat already diagnosed with diabetes.
Causes
The main causes of peripheral neuropathies in cats are:
- Diabetes: diabetic neuropathy is the most common form.
- Poisoning from medicines, heavy metals and other toxins.
- Infectious diseases, including feline immunodeficiency virus and leukaemia virus.
- Inflammatory and autoimmune diseases.
- Nerve tissue tumours or external compression of a nerve.
- Injuries, including fractures, bruising and damage to the spine and limbs.
- Genetic and inherited factors, described in some breeds.
The relative frequency of neuropathies depends on the population studied and whether the term covers all peripheral nerve diseases or generalised polyneuropathy. An injury may affect one nerve. Inflammatory disease or a metabolic disorder may affect several nerves, but the distribution alone does not confirm the cause.
Stretching, bruising, compression or complete severing can damage a nerve. For example, the nerve plexus supplying a forelimb may be injured in a road traffic accident. A severe tail-pull injury can also damage nerves controlling bladder and tail function. Urination and other possible injuries are therefore assessed alongside pain and movement.
Risk factors
- Older age.
- Chronic hormonal diseases, particularly diabetes.
- Tumours.
- Exposure to poisons and toxic substances.
- Limb and spinal injuries.
Age or diabetes does not explain every neuropathy, and inherited and inflammatory forms also occur in younger cats. Tell the vet about medicines, possible toxin exposure, when symptoms began and previous accidents. A sudden change and weakness that has gradually worsened over a long period guide investigations differently.
Typical symptoms
Symptoms depend on the extent and location of the damage:
- Limb weakness and an unsteady gait.
- Partial or complete paralysis, most often in the hind legs.
- The gait typical of diabetic neuropathy, with the hocks on the ground.
- Muscle wasting.
- Reduced or absent reflexes.
- Increased or reduced sensation in the limbs.
- Difficulty jumping and climbing stairs.
The hock is the hind leg joint corresponding to the ankle. When it drops close to the floor, the cat stands lower than usual. This is consistent with diabetic neuropathy, but a similar posture may have another nerve, muscle or supporting tissue cause. Diagnosis cannot be made from a photograph alone.
With forelimb nerve damage, a cat may avoid bearing weight on one leg or drag the paw. Facial nerve dysfunction may cause reduced blinking or a drooping lip. A changed voice, breathing difficulty or swallowing problem should be reported promptly, because not every nerve injury is confined to the limbs.
Complications and consequences
Untreated neuropathies can lead to:
- Permanent paralysis.
- Muscle wasting.
- Abnormal joint and spinal positions.
- Chronic pain.
- Reduced mobility and quality of life.
A paw with poor sensation or one that drags may be injured unnoticed, so skin checks form part of care. Difficulty getting up and moving can also reduce access to food, water and the litter tray. Not every neuropathy is painful, but pain is assessed in every cat according to its symptoms and the lesion.
Diagnosis at the vet
A thorough assessment helps identify the cause and form of neuropathy:
- Neurological examination, including gait, reflexes and muscle tone.
- Blood tests, including biochemistry, glucose and viral infection tests.
- Electrical muscle testing (electromyography) and nerve conduction velocity measurements.
- X-rays or MRI if injury or a tumour is suspected.
- Nerve or muscle biopsy in difficult cases.
The vet assesses whether the main problem is painful lameness, weakness or impaired coordination. Joints and muscles are examined too. The distribution of neurological findings helps distinguish damage to one nerve from a wider disease. One-sided muscle wasting, for example, can help target further investigations.
Blood and urine tests look for diabetes, electrolyte disturbances and other systemic diseases, among other problems. A single high glucose result in a cat may reflect stress, so additional evidence may be needed to diagnose diabetes. The cause of nerve damage is not inferred from one laboratory finding alone.
Electrical tests measure muscle and nerve function. Electromyography alone does not always distinguish muscle disease from nerve disease, so conduction studies and other findings may complement it. MRI can help locate damage, particularly to a nerve root or plexus, but an imaging change does not always identify the disease type.
A biopsy allows examination of nerve or muscle structure and changes such as inflammation. The sample is chosen according to the question being addressed and whether the answer would change treatment. Not every case that looks like diabetic neuropathy requires a nerve biopsy: the need is assessed from the overall clinical picture.
Treatment
Treatment depends on the cause:
- For diabetic neuropathy, blood sugar control, insulin treatment and B vitamins.
- For poisoning, removal of the toxin from the body and supportive care.
- For infections, treatment of the underlying disease as the vet considers appropriate.
- For tumours, surgery and chemotherapy.
- For injuries, surgical stabilisation, physiotherapy and rehabilitation.
- Symptomatic treatment, including pain relief, massage and rehabilitation exercises.
This list describes possible treatments, and not every cat needs them all. Diabetes treatment aims for safe blood sugar control and appropriate nutrition. Nerve recovery may become apparent only gradually. The need for vitamin supplementation is assessed separately; it does not replace diabetes treatment or investigation of a suspected deficiency.
Inflammatory neuropathies do not form a single treatment group. Some require immunosuppressive medication, but supportive care is central in acute idiopathic polyradiculoneuritis, and corticosteroids have not shown benefit. Weak breathing muscles may require hospital care. A medicine is not chosen from the label polyneuropathy alone.
After injury, assessment determines whether a nerve is merely bruised or completely severed. Treatment may include surgery, pain relief and protection of the limb. Not every tumour is suited to the same surgery or chemotherapy either. Treatment goals and realistic expectations for function are discussed according to the findings.
Home care and monitoring
Prevent falls and access to stairs if your cat cannot control its movements. Non-slip surfaces and a low-sided litter tray make daily life easier. Place water and food near the resting area. If your cat cannot change position independently, agree clean, soft bedding and assistance with the practice.
Do not start massage or stretching without individual rehabilitation instructions, particularly after injury. The amount and type of exercise are tailored to the lesion, pain and remaining strength. Rehabilitation aims to preserve joint movement and muscle function, but does not replace necessary surgery or other treatment of the cause.
Monitor whether your cat can stand, eat and urinate. After a tail or pelvic nerve injury, wet bedding alone does not prove that the bladder is emptying under control. Urine leakage and difficulty urinating need assessment. Do not press on the bladder at home without examination and individual teaching.
Prognosis
Diabetes-related nerve dysfunction may improve with treatment, but not every neuropathy resolves completely. Nerve tissue heals slowly, and a severed nerve or extensive damage has a different prognosis from mild bruising. Follow-up assesses both disease control and everyday function; reduced pain alone does not describe the whole recovery.
Prevention
- Monitor blood sugar in a diabetic cat.
- Prevent access to toxic substances.
- Prevent injuries, particularly in outdoor cats.
- Take older cats for regular checks and investigations.
- Provide a balanced diet with adequate vitamins.
Use products intended for cats and keep medicines and chemicals out of reach. A balanced complete diet does not usually need a selection of vitamins added on your own initiative. Prevention cannot eliminate every inherited, cancerous or immune-mediated neuropathy, so new movement changes need investigation despite good routine care.
Important for cat owners
Peripheral neuropathies are serious diseases that can cause paralysis and loss of mobility. Remember that hind leg weakness, an awkward gait and difficulty jumping are reasons to take your cat to a vet promptly. The earlier diagnosis and treatment begin, the better the chance of preserving activity and mobility.
This article provides general information and does not replace veterinary care. Contact a vet if you notice signs of illness in your cat.
Frequently asked questions
Do hocks on the ground always mean diabetes?
No. The posture is consistent with diabetic neuropathy but has other possible causes. Diagnosis requires examination and findings consistent with diabetes, rather than a photograph alone.
Can nerve damage heal?
In some situations, yes. Mild bruising and diabetes-related dysfunction may resolve, but extensive damage or a severed nerve may leave permanent impairment. The prognosis is assessed from the cause and examination findings.
Does every cat need a nerve biopsy?
No. A biopsy is considered if the information will help diagnosis and treatment selection. Clinical examination and other appropriate investigations come first.
Can I treat weakness with B vitamins?
Do not rely on a vitamin supplement instead of investigating the cause. A diabetic cat needs appropriate disease management, while other neuropathies may require a completely different plan. Any deficiency and the need for supplementation are assessed separately.
This article is for general information only and is not a guide to treatment. If you notice the first signs of illness, contact your vet.
Paw4care editorial team
Sources
- Disorders of the Peripheral Nerves in Cats, Merck Veterinary Manual, accessed 2026-11-04.
- Neuromuscular Disorders in the Cat: Clinical Approach to Weakness, Journal of Feline Medicine and Surgery, accessed 2026-11-04.
- Feline Diabetes, Cornell Feline Health Centre, accessed 2026-11-04.
- Inflammatory Disorders of the Peripheral Nerves and Neuromuscular Junction in Animals, Merck Veterinary Manual, accessed 2026-11-04.
- Neurological lameness in the cat: Common causes and clinical approach, Journal of Feline Medicine and Surgery, accessed 2026-11-04.
- Ataxia in Cats, VCA Animal Hospitals, accessed 2026-11-04.
- Management of Cats with a Tail Pull Injury, North Downs Specialist Referrals, accessed 2026-11-04.
- Acute vs. Chronic Pain, AAHA, accessed 2026-11-04.