Neuropathy is a recognised complication, but does not develop in every diabetic cat. Hind leg weakness can have another cause even after diabetes is diagnosed. Do not increase insulin yourself because of a new gait change; both glucose control and leg function need assessment.
When to see a vet urgently
Contact an emergency vet immediately if a diabetic cat develops:
- Sudden loss of hind leg function, severe pain or cold paws.
- Trembling, sudden staggering, seizures or collapse.
- Vomiting and loss of appetite with marked tiredness.
- Breathing difficulty or clearly altered consciousness.
Possible causes include low blood sugar, ketoacidosis or a blocked blood vessel. You can find a vet near you. Do not wait for earlier neuropathy to explain the signs.
Overview
Diabetes disrupts glucose metabolism, causing chronic hyperglycaemia. Excess blood sugar damages nerve fibres and the vessels supplying them. Peripheral neuropathy follows: nerve impulse conduction deteriorates and normal nerve supply to muscles is lost.
The most typical feline sign is hind leg weakness and a characteristic posture: the cat walks with its hocks on the ground rather than on its toes (a plantigrade stance).
Hyperglycaemia means raised blood glucose. Damage may affect both the nerve fibre and its insulating myelin layer. Impaired signalling changes muscle function and postural control. However, external posture alone cannot establish the precise extent of nerve damage.
In a plantigrade stance, the hind leg's hock drops towards the surface. Early changes may include failing to rise onto the toes as before or reach a familiar level. This is not normal ageing, but posture alone is also insufficient to diagnose diabetes or neuropathy.
Causes
Poorly controlled diabetes is the main cause. Contributing factors include:
- Chronic hyperglycaemia.
- Inadequate or irregular insulin administration.
- Lack of dietary monitoring.
- Obesity.
- Age over seven to eight years.
Excess weight and older age increase diabetes risk, but seven to eight years is not a precise threshold for neuropathy onset. Not every older or overweight diabetic cat develops nerve damage. Sustained high blood sugar is more relevant to assessment than a particular birthday.
Poor control does not automatically mean a mistake in your care either. Concurrent illness, hormonal disease or changed food intake may alter insulin effects. Tell the treating vet about difficulties with injections, feeding arrangements or measurements so the plan can be made workable.
Risk factors
- Diabetes left untreated for a long time.
- Late diagnosis of diabetes.
- Stressors and other illnesses worsening metabolic disturbances.
- An inherited predisposition to hormonal diseases.
Practical evidence about separate inherited risk factors for feline neuropathy is limited. Family history of hormonal disease or stress does not establish nerve damage alone. Concurrent illnesses are investigated particularly when previously appropriate diabetes treatment no longer gives the expected response.
Typical symptoms
- Hind leg weakness.
- An altered gait with the hocks on the ground.
- Unsteady movement and uncertain jumping.
- Hind leg muscle wasting.
- Reduced movement and apathy.
- Partial or complete paralysis in severe disease.
Sudden complete paralysis or severe pain must not be watched at home as slowly developing neuropathy. Cold, painful hind legs particularly may indicate an arterial blockage. Sudden weakness in a cat receiving insulin may instead signal low blood sugar.
At home, watch how your cat stands up, reaches its bowl and uses the litter tray. A calm walking video helps compare changes later. Do not test strength through repeated jumps: an unsteady cat may fall or become more reluctant to move.
Complications and consequences
Diabetic neuropathy reduces quality of life and, if diabetes remains uncontrolled, can lead to:
- Permanent muscle wasting.
- Permanent paralysis.
- Chronic pain.
- Loss of functional ability.
Severe continuous pain is not considered an inevitable feature of diabetic gait changes. Pain behaviour needs separate investigation because joint or circulatory disease may coexist, for example. Permanent paralysis is not inevitable in every neuropathy either; partial or complete recovery is possible.
Diagnosis at the vet
Diagnosis is based on:
- Clinical signs, including gait and hind leg weakness.
- Blood tests for raised glucose and fructosamine.
- Electrical muscle testing and nerve conduction velocity measurement when needed.
- Exclusion of other causes of leg weakness, including arthritis, injuries and spinal cord diseases.
Examination assesses gait, limb posture, muscles and neurological function. Diabetes is reviewed as a whole, with electrolytes such as potassium checked when needed. Low-potassium muscle weakness requires different treatment from diabetes-related nerve damage.
A single high glucose result at the practice may partly reflect stress. Several sources of information therefore contribute to confirming diabetes and assessing control. Fructosamine reflects average glucose over the preceding period, but other illnesses can affect it too. It does not measure nerve recovery alone.
Home measurements or a continuous glucose sensor can add information if their use suits both you and your cat. A sensor estimates glucose in tissue fluid, and results are interpreted alongside condition. An unusual value or marked symptom may need confirmation according to the vet's plan.
Electrical nerve and muscle investigations are considered when symptoms are atypical or the cause unclear. Not every cat needs every specialist test. Clearly one-sided, rapidly worsening or progressive signs despite diabetes control increase the need for investigation, for example.
Treatment
The main goal is diabetes control:
- Appropriate insulin treatment prescribed by the vet.
- A low-carbohydrate diet.
- Weight management and treatment of obesity.
- B vitamins and antioxidants to support nerve tissue.
- Physiotherapy and gentle rehabilitation exercises.
The need for vitamins, antioxidants and rehabilitation is assessed separately. They do not replace diabetes treatment and are not automatically necessary for every cat. Agree supplements with the vet; adding a product alone does not ensure correction of the cause of nerve damage.
Diabetes medication is chosen according to the cat's whole situation. Some cats receive an oral diabetes medicine called an SGLT2 inhibitor, but it does not suit every cat, and insulin must not be replaced with it on your own initiative. Poor appetite, vomiting or marked tiredness during this treatment requires assessment for ketoacidosis even when glucose is not high.
The diet must also suit other illnesses and food preferences. Low-carbohydrate food may support glucose control, but a change must not leave your cat refusing to eat. Diet and weight changes can affect medication needs, so they are coordinated with monitoring.
Once glucose is controlled, some cats gradually regain nerve function and walk better, but changes remain permanent in others.
Nerve recovery and glucose improvement are different. Walking may improve gradually only after glucose has stabilised. Conversely, neuropathy does not itself rule out possible diabetes remission, when medication needs may decrease or disappear under veterinary supervision. Do not stop medication because walking improves.
Home care and supporting mobility
Make food, water and a low-sided litter tray easily accessible. Add non-slip surfaces to slippery routes and easier access to raised resting places. The aim is fewer falls and safe movement according to your cat's condition.
Agree rehabilitation intensity separately. Do not force a painful or weak cat to exercise. Alongside function, monitor appetite, weight, drinking, urination and medication actually given. Written records help distinguish real improvement from daily fluctuations.
If your cat is not eating normally, contact the practice for instructions suited to its medication. Do not improvise insulin changes or force-feed a cat with breathing or swallowing difficulty. Keep written instructions available for suspected low blood sugar and other illness.
Prevention
- Early diagnosis and treatment of diabetes.
- Regular blood sugar monitoring.
- Precise adherence to the insulin treatment plan.
- A diet suited to your cat's condition.
- Regular veterinary visits to adjust treatment.
Important for cat owners
Diabetic neuropathy is one of the most common complications of feline diabetes. Remember that hind leg weakness, altered walking or difficulty jumping in a diabetic cat is a warning sign. Prompt veterinary assessment and good diabetes management help slow progression and improve quality of life.
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
Does walking with the hocks down always mean diabetes?
No. Other nerve, muscle and musculoskeletal diseases can produce similar weakness or posture. Diabetes and neuropathy are confirmed through investigation.
Can diabetic neuropathy improve?
It may resolve partly or completely, but recovery varies. Good diabetes control supports recovery, and nerve healing is not assessed from one glucose result or a single good day.
Is a B vitamin supplement enough treatment?
No. It does not replace diabetes management. Supplement needs are assessed separately, and starting one must not replace investigation of control or other causes of weakness.
Why is sudden hind leg weakness urgent?
Low blood sugar or a blocked blood vessel may be responsible. Pain, cold paws, seizures, collapse and breathing difficulty require immediate contact.
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
- Metabolic Disorders of the Peripheral Nerves in Animals, Merck Veterinary Manual, accessed 2026-11-05.
- iCatCare 2025 consensus guidelines on the diagnosis and management of diabetes mellitus in cats, Journal of Feline Medicine and Surgery / International Cat Care, accessed 2026-11-05.
- 2026 AAHA Diabetes Management Guidelines for Cats, AAHA / Journal of the American Animal Hospital Association, accessed 2026-11-05.
- Feline Diabetes, Cornell Feline Health Centre, accessed 2026-11-05.
- Feline hypokalemic polymyopathy, Merck Veterinary Manual, accessed 2026-11-05.
- Arterial Thromboembolism in Dogs and Cats, Merck Veterinary Manual, accessed 2026-11-05.
- 2022 ISFM Consensus Guidelines on Management of the Inappetent Hospitalised Cat, Journal of Feline Medicine and Surgery, accessed 2026-11-05.
- Initial Triage and Resuscitation of Small Animal Emergency Patients, Merck Veterinary Manual, accessed 2026-11-05.