Clinical trial Recruiting at 1 site Interventional Ages 45 to 60

Vagus nerve stimulation to reduce pain and improve nerve function in diabetic neuropathy

Official title: Effect of Vagus Nerve Stimulation on Pain Intensity, Nerve Conduction Studies and Functional Outcomes in Diabetic Peripheral Neuropathy Patients

Run by Cairo University · NCT07405021 · Data updated 2026-11-12

This test tries non-invasive transcutaneous vagus nerve stimulation to reduce foot pain and improve nerve conduction and function in people aged 45–60 with diabetic peripheral neuropathy.

Quick facts

Study typeInterventional
Ages45 Years to 60 Years
SexAll
Enrollment40 (estimated)
SponsorCairo University
Academic / other
Locations1 site (Damietta)
StatusRecruiting
StartedJanuary 1, 2026
Main results expectedMarch 1, 2026
Study endsApril 1, 2026
Registry record updatedFebruary 12, 2026
Trial IDNCT07405021 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 45–60 with a history of diabetes longer than five years, symptomatic glove‑and‑stocking numbness or burning pain in the feet, HbA1c between 6.5% and 7%, and the ability to walk independently are the intended participants.

Probably not a fit

People with pacemakers or other implanted electrical devices, significant cardiac arrhythmias, other neuromuscular disorders, active foot ulcers or major foot deformities, uncontrolled diabetes, or those outside the 45–60 age range are unlikely to benefit from or be eligible for this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Thirty adults with diabetic peripheral neuropathy will be enrolled at the outpatient clinic of the Faculty of Physical Therapy, Horus University (Damietta) and receive either transcutaneous auricular vagus nerve stimulation, sham stimulation, or a conventional physical therapy program. Pain intensity, neuropathic symptom severity, nerve conduction studies, and functional outcome measures will be collected before and after the intervention period. The study compares real stimulation against sham and standard therapy to see whether tVNS provides greater reductions in pain and objective improvements in nerve function. Safety and tolerability, including cardiac contraindications, will also be monitored throughout the protocol.

Why it matters

Potential benefit: If successful, this could provide a non-drug option to reduce neuropathic pain, improve nerve function, and help people with diabetic neuropathy better perform daily activities.

How similar studies have gone: Small pilot studies of vagus nerve stimulation for some chronic pain syndromes have shown promising but inconsistent results, and robust evidence specifically for diabetic neuropathy is limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

* Thirty patients diagnosed with diabetic neuropathy of both genders.
* Age range between 45 and 60 years.
* Presence of numbness and/or pain in the feet with no other identifiable cause.
* Pain characterized as stabbing, electric shock-like, or burning in nature.
* Presence of glove-stocking sensory changes and abnormal sensations in the distal lower limbs.
* Ability to ambulate independently without assistance.
* Patients under full medical control.
* Hemoglobin A1c levels ranging from 6.5% to 7%.
* History of diabetes mellitus for more than 5 years.

Exclusion Criteria

* Implantation of cardiac pacemakers or other electrical stimulation devices.
* Presence of sinus bradycardia, sick sinus syndrome, or other cardiac arrhythmias.
* Lumbar radiculopathy.
* Psychiatric or mental disorders or history of seizures.
* Visual or auditory impairments or tremors affecting balance.
* Presence of other neuromuscular disorders.
* Foot deformities or active foot ulcers.
* History of lower limb surgical operations.

Where it's running

  • outpatient clinic, faculty of physical therapy, Horus university
    Damietta, Egypt
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.