What is diabetic neuropathy?

Diabetic neuropathy is nerve damage that can result from prolonged high blood glucose. The most common form, peripheral neuropathy, usually begins in the feet and legs and can cause numbness, tingling, burning, or pain. Autonomic neuropathy affects nerves that control internal functions such as digestion, heart rate, and the bladder.

Why is numbness in the feet a concern?

When the feet lose sensation, small injuries such as blisters or cuts can go unnoticed and be slow to heal, raising the risk of foot ulcers and other complications. This is why daily foot checks and regular professional foot exams are widely recommended for people with diabetes.

Can diabetic neuropathy be prevented or slowed?

According to the NIDDK and ADA, keeping blood glucose within a target range can help prevent or slow nerve damage, and good foot care helps reduce the risk of injury. Risk rises with the duration of diabetes and with higher glucose levels. Report any new symptoms to a clinician, who can advise on management.

Type 2 diabetes · complications

Diabetic Neuropathy, Explained

6 min read · Updated July 2026

Diabetic neuropathy is nerve damage that can develop when blood glucose stays high over a long period. It most often shows up as changes in sensation in the feet and legs, but it can also affect the nerves that quietly run internal functions like digestion and heart rate. Understanding the early signs — and why numb feet deserve attention — helps people act before problems grow.

What diabetic neuropathy is

Nerves rely on healthy blood vessels and a stable chemical environment to work. Prolonged high glucose can damage both the nerves themselves and the small vessels that nourish them. The result is neuropathy — impaired nerve signalling. It is one of the microvascular complications of diabetes, alongside eye and kidney disease; see the overview of complications of type 2 diabetes, and the type 2 diabetes hub for the bigger picture.

Peripheral neuropathy

The most common form is peripheral neuropathy, which typically starts in the feet and legs and may later involve the hands. Common symptoms include:

Numbness or reduced ability to feel pain, heat, or cold.
Tingling or a "pins and needles" sensation.
Burning or sharp pain, often worse at night.
Weakness or a loss of balance and coordination.

Symptoms can be mild at first and easy to dismiss, which is part of why the condition can progress unnoticed.

Why numb feet raise the stakes

The loss of sensation is not just uncomfortable — it changes risk. When the feet cannot feel a blister, a cut, or a stone in a shoe, small injuries can go unnoticed and be slow to heal. Over time this raises the risk of foot ulcers and further complications, especially when blood flow is also reduced. This is the practical reason daily foot checks and regular professional foot exams are standard advice: they substitute a deliberate look for the warning that sensation would normally provide.

Autonomic neuropathy

Diabetes can also affect the autonomic nerves that control functions we do not think about. Depending on which nerves are involved, autonomic neuropathy can affect digestion, heart rate and blood pressure regulation, the bladder, and other systems. Because these symptoms are varied and easy to attribute to other causes, they are worth mentioning to a clinician rather than waiting.

Risk and what helps

Risk of neuropathy rises with the duration of diabetes and with higher glucose levels over time. The reassuring counterpart, emphasised by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) and the American Diabetes Association (ADA), is that keeping glucose within a target range can help prevent or slow nerve damage, and that good foot care reduces the risk of injury. New or changing symptoms should be reported to a clinician, who can assess them and advise on management. Endobits is clinical decision-support software used under clinician oversight; it can help organise and interpret glucose data that informs a care plan, but it does not diagnose or treat.

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Sources

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) — Diabetic Neuropathy (Nerve Damage). American Diabetes Association — Neuropathy. Centers for Disease Control and Prevention — Diabetes and Your Feet.

This article is educational and not medical advice. Report new or changing symptoms to a qualified healthcare provider, who can assess and manage them. Endobits is clinical decision-support software used under clinician oversight, not a diagnostic device.