Diabetic Neuropathy: Treatment Options and Regenerative Research

What is diabetic neuropathy?

Diabetic neuropathy is nerve damage caused by long-term high blood sugar. It is one of the most common complications of both type 1 and type 2 diabetes. The most common form, diabetic peripheral neuropathy, affects the feet and legs first and may later reach the hands, in a “stocking and glove” pattern. The NHS peripheral neuropathy guide explains the wider condition. For neuropathy from other causes, see our general neuropathy guide.

Types

• Peripheral (distal symmetric) neuropathy: feet and legs, then hands
• Autonomic neuropathy: affects digestion, bladder, sexual function, heart rate and blood pressure
• Proximal neuropathy (diabetic amyotrophy): pain and weakness in the hip and thigh
• Focal neuropathies: single nerves, such as carpal tunnel syndrome

Symptoms

• Numbness, tingling or “pins and needles” in the feet
• Burning, stabbing or electric pain, often worse at night
• Loss of sensation, so injuries go unnoticed
• Balance problems
• Muscle weakness
• Foot deformities and ulcers in advanced cases

Causes and risk factors

• Long duration of diabetes
• Poor blood sugar control (high HbA1c)
• High blood pressure and high cholesterol
• Smoking and heavy alcohol use
• Obesity
• Kidney disease
• Vitamin B12 deficiency, which can be caused by long-term metformin use

Diagnosis

Test	What it checks
Monofilament test	Protective sensation on the soles of the feet
Vibration test (tuning fork)	Large-fibre nerve function
Reflexes and examination	Ankle reflexes, foot structure, skin and pulses
Nerve conduction studies	Confirms and grades nerve damage
Skin biopsy	Small-fibre neuropathy, when routine tests are normal
Blood tests	HbA1c, B12, thyroid, kidney function to exclude other causes

If you have nerve conduction results or specialist letters, you can send your reports for a doctor review. A doctor will check whether diabetes is the likely cause and what options are realistic.

Standard treatment first

1. Blood sugar control. The most important step to slow progression, alongside blood pressure and cholesterol control.
2. Foot care. Daily inspection, proper footwear, nail care and regular podiatry. This prevents ulcers and amputations.
3. Pain medicines. Guidelines from the American Diabetes Association and NICE recommend duloxetine, pregabalin, gabapentin or amitriptyline. Capsaicin cream or patches may help localised pain.
4. Treat contributing factors. Correct B12 deficiency, reduce alcohol, stop smoking.
5. Physiotherapy for balance and strength.
6. Spinal cord stimulation. High-frequency (10 kHz) spinal cord stimulation was shown in a randomised trial (Petersen et al., JAMA Neurology, 2021) to reduce pain in painful diabetic neuropathy and is approved by the FDA for this use.
7. Autonomic symptom treatment as needed, such as medicines for stomach emptying or erectile dysfunction.

Regenerative options: evidence level

Approach	Rationale	Evidence
Mesenchymal stem cells	May release growth factors that support nerves and small blood vessels	Mostly animal studies; few small human reports
PRP injections around nerves	Platelet growth factors may support nerve healing	Small human studies with positive signals; not well controlled
Exosomes	Cell-derived signals for nerve repair	Laboratory and animal research
Surgical nerve decompression	Releases nerves at tight points	Controversial; mixed evidence

Stem cell therapy for diabetic neuropathy is experimental. Animal research is encouraging, but human evidence is limited to small studies. PRP therapy has some small clinical studies in which PRP was injected along leg nerves, reporting improved pain and sensation scores, but these need confirmation in larger blinded trials. Exosome therapy is at an earlier stage.

Regulatory status

No stem cell or exosome product is approved for diabetic neuropathy by the US FDA, the Australian TGA or the UK MHRA. The FDA warns about unapproved stem cell therapies. This is a key reason patients from the UK, Australia and the US look abroad, but it also means the evidence has not met regulators’ standards.

Who may be a candidate, and who should not

May be considered for review:

• Confirmed diabetic peripheral neuropathy
• Reasonably controlled blood sugar (very high HbA1c lowers any chance of benefit)
• Persistent pain or numbness despite standard treatment
• Healthy foot skin with no ulcers
• Realistic expectations

Should not:

• Active foot ulcer, infection, gangrene or Charcot foot
• Severe peripheral arterial disease without vascular review
• Very poorly controlled diabetes
• Unstable heart disease
• Active cancer, pregnancy
• Anyone planning to stop diabetes or pain medicines

Risks

• Injection pain, bruising and swelling
• Infection, a serious risk in diabetic feet and legs
• Temporary increase in nerve pain
• Infusion reactions with IV cell therapy
• No improvement

Cells are prepared in ISO 9001:2015-certified partner laboratories.

What a Bangkok program looks like

1. Send your records. HbA1c, nerve conduction studies, foot assessment, medication list.
2. Doctor review. An honest opinion about whether regenerative care is reasonable for you.
3. Assessment in Bangkok. Neurological and foot examination, blood tests, circulation checks.
4. Treatment plan if suitable, combined with foot care and metabolic advice.
5. Report for your diabetes team.

See how it works for the full process.

Aftercare

• Keep blood sugar in your target range
• Inspect your feet daily and keep injection sites clean and dry
• Wear well-fitting shoes; avoid walking barefoot, including in hotels and by pools
• Continue pain medicines unless your doctor changes them
• Report redness, swelling, fever or wounds promptly

Sources

• NHS: Peripheral neuropathy
• American Diabetes Association. Standards of Care in Diabetes (annual), neuropathy section.
• Petersen EA, et al. Effect of high-frequency (10-kHz) spinal cord stimulation in patients with painful diabetic neuropathy: a randomized clinical trial. JAMA Neurology, 2021.
• U.S. FDA: Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes