Clinical Research Directory

Neuropathic Pain and Operant Conditioning of Cutaneous Reflexes After SCI

The purpose of the second part of the study is to examine the effect of reflex training in the leg to decrease neuropathic pain. For this, the researchers are recruiting 15 individuals with neuropathic pain due to spinal cord injury to participate in the reflex training procedure. The study involves approximately 50 visits with a total study duration of about 6.5 months (3 months for baseline and training phases followed by 1 month and 3 month follow-up visits).

Neuroma-Associated Pain Management After Combat-Related Trauma in Ukraine

This multicenter interventional study in Ukraine is designed to compare the effectiveness of cryoablation and radiofrequency ablation in managing neuroma-associated pain following combat-related trauma. Adult patients with clinically significant neuropathic pain caused by neuromas will be randomly assigned to receive either image-guided cryoablation or radiofrequency ablation of the affected nerve. Cryoablation uses controlled cold temperatures to temporarily disrupt nerve conduction, while radiofrequency ablation uses thermal energy to modulate nerve function. Both interventions are minimally invasive and performed under image guidance. The study will evaluate changes in pain intensity, opioid consumption, functional outcomes, and patient-reported measures at predefined time points following the procedure. This research aims to provide evidence on which intervention is more effective in reducing pain, improving function, and minimizing the need for opioid medications in patients with combat-related neuroma pain.

An Integrated Intervention of Spinal Cord Stimulation and Multidisciplinary Rehabilitation for Chronic Neuropathic Leg Pain: A Single-case Experimental Design Protocol

People with nerve damage can develop nerve pain. The pain can sometimes be severe and unpredictable, causing odd or alarming sensations - for example, lightning-like or electric shock feelings in the area served by the damaged nerve. The investigators will examine a treatment for nerve pain in the legs caused by nerve damage, which can occur after a herniated disc or a bone fracture, with or without surgery. Previous research suggests that spinal cord stimulation can relieve nerve pain in the legs after surgery or injury, but its effectiveness is still debated. Other studies show that multidisciplinary treatment helps people with long-term pain to improve their quality of life and to better cope in life. National and international guidelines recommend this kind of multidisciplinary care for long-term pain. There has yet been published research on spinal cord stimulation combined with multidisciplinary treatment as a bundle intervention. The investigators therefore want to find out whether this combined approach can reduce nerve pain in the legs and improve physical functioning.

Intrathecal Dexmedetomidine and Acute Neuropathic Pain After Lower Limb Amputation

This randomized controlled trial evaluated the effect of adding intrathecal dexmedetomidine (10 µg) to hyperbaric bupivacaine (11 mg) for spinal anesthesia in patients undergoing lower limb amputation. Thirty patients (ASA I-III) scheduled for elective supra- or infracondylar amputation were randomly allocated to two groups: Control Group (n=15) received hyperbaric bupivacaine 11 mg plus saline 0.9%, and Experimental Group (n=15) received hyperbaric bupivacaine 11 mg plus dexmedetomidine 10 µg. Primary outcomes were duration of motor and sensory neuraxial block and postoperative analgesia at 48 hours. As a prespecified exploratory secondary outcome, incidence of acute neuropathic pain was assessed using the DN4 screening tool at 48 hours. The study was conducted at the Hospital Regional de Alta Especialidad Dr. Juan Graham Casasús, Villahermosa, Tabasco, Mexico, from 30 September to 15 December 2025. Ethics approval was obtained from the Institutional Review Board (CEI/JGC/C02-25) prior to patient enrollment.

Utility of Multisensory Body-Representation in Spinal Cord Injury (SCI) With Pain

The purpose of this study is to investigate the effectiveness of bodily illusions combined with transcranial direct current stimulation (tDCS) on neuropathic pain symptoms and sensory functions in participants with spinal cord injury (SCI) and neuropathic pain.

Real-World Efficacy of Evoke® Closed-loop Spinal Cord Stimulation (CL-SCS) Therapy in Chronic Pain Patients (ULTRA).

This observational, prospective data collection is designed to evaluate the efficacy of CL-SCS therapy in real-world patients suffering from chronic pain.

SERENITY Study of Chronic Pain Interference in Adults

SERENITY is a remote observational study designed to characterize inter-individual differences in chronic pain among adults with chronic low back pain and adults with spinal cord injury-related neuropathic pain. Participants will complete baseline assessments and intensive longitudinal data collection using ecological momentary assessment surveys, brief cognitive tests, and passive Fitbit data collection. Ecological momentary assessment surveys will be completed 4 times per day for at least 3 weeks and will assess pain interference, pain intensity, stress, affect, sleep, body and mind awareness, agency, medication use, manual therapy frequency, and related factors. The study will use Bayesian hierarchical modeling, clustering analyses, and causal discovery approaches to identify person-specific and group-level factors associated with pain interference.

Study Evaluating the Analgesic Efficacy of Capsaicin 8% Patches in Chronic Coccygodynia.

The primary objective is to demonstrate the analgesic effect at day 60 of 8% capsaicin patch (Qutenza) for the treatment of patients with coccygodyinia.

Neuropathic Pain Severity and Its Association With Radiological Findings in Lumbar Spinal Stenosis

This cross-sectional observational study aims to evaluate neuropathic pain severity in patients with lumbar spinal stenosis (LSS) and to investigate its association with radiological findings. Neuropathic pain will be evaluated using the Neuropathic Pain Symptom Inventory (NPSI). Pain intensity, neuropathic pain characteristics, functional status, walking capacity, and psychological symptoms will also be assessed. The relationships between NPSI scores and clinical, functional, psychological, and radiological parameters will be investigated.

Insula Neuromodulation for Chronic Neuropathic Pain

This study will comprehensively investigate the insula as a brain target for neuromodulation to treat chronic neuropathic pain.

Virtual Walking Therapy for Neuropathic Pain Following Incomplete Spinal Cord Injury

The purpose of this study is to determine if playing a virtual reality walking game can help improve neuropathic pain in adults with incomplete spinal cord injury.

Virtual Reality-Based Hypnotherapy for Pain, Sleep, and Mood in Spinal Cord Injury

The goal of this clinical trial is to learn whether virtual reality (VR)-based hypnotherapy, added to conventional physiotherapy, improves pain, sleep, mood, and quality of life in adults with chronic spinal cord injury. The main questions it aims to answer are: * Does VR-based hypnotherapy added to physiotherapy reduce pain intensity more than physiotherapy alone? * Does it improve neuropathic pain, sleep quality, anxiety and depression, spasticity, and quality of life? Researchers will compare participants who receive VR-based hypnotherapy in addition to physiotherapy with participants who receive physiotherapy alone. Participants will: * Receive a standard physiotherapy and rehabilitation program 5 days a week for 2 weeks (10 sessions). * If assigned to the VR group, also receive an approximately 20-minute VR-based hypnotherapy session after each physiotherapy session, using a VR headset and headphones. * Complete assessments at the start of the study, at the end of the 2-week treatment period, and 2 weeks after treatment ends.

Chronic Unilateral Lumbar Radicular Pain

Chronic neuropathic lumbar pain is among one of the most widespread complaints of patients.Many approaches have been attempted to target chronic pain, with varying efficacy and risks. Transgrade (TG) epidural injection is a new technique using a Racz- Coudé needle for epidural access at a "transgrade" angle without requiring any specialized hardware or accessories. Interlaminar (IL) epidural steroid injection (ESI) is one of the procedures that involves the delivery of injectate to the epidural space through directing a needle between the laminae of two adjacent vertebrae.

Efficacy and Safety of High-Concentration 35 kDa Hyaluronan Gel for Herpes Zoster-Associated Pain

This is a prospective, single-arm, open-label, pilot clinical study to evaluate the efficacy and safety of topical 10% high-concentration 35 kDa hyaluronan (HA35) gel in subjects with herpes zoster-associated pain (ZAP). Eligible participants will receive a single topical application of the study gel. The primary objective is to assess rapid pain reduction within 2 minutes and 24hours after application. Secondary objectives include evaluation of analgesic duration, local tolerability, erythema improvement, and overall safety throughout the observation period. This is a minimal-risk, non-pharmacological supportive care intervention.

High-Intensity Peripheral Magnetic Stimulation in Traumatic Peripheral Nerve Injury

Traumatic peripheral nerve injury is a common cause of chronic neuropathic pain, muscle weakness, and functional limitation, particularly in young and active individuals. Current conservative and pharmacological treatments often provide incomplete relief or carry side effects. High-intensity peripheral magnetic stimulation (PMS) is a non-invasive method that may help reduce neuropathic pain and support motor recovery, but evidence in traumatic nerve injury is limited. This randomized, double-blind, sham-controlled trial aims to evaluate whether high-intensity PMS, added to a standardized therapeutic exercise program, improves pain, function, quality of life, and electrophysiological measures in adults with traumatic peripheral nerve injury. Participants will be randomly assigned to receive either active PMS or sham PMS, in addition to the same exercise program. Outcomes will be assessed at baseline, 4 weeks, and 8 weeks.

Neuropathic Pain and Type II Diabetic Patients

Diabetes Mellitus (DM) is a common metabolic disease characterized by hyperglycemia resulting from insufficiency, deficiency or absence of the insulin hormone. Chronic hyperglycemia, secondary metabolic and microvascular changes resulting in diabetic neuropathy are among the most common complications encountered in DM patients. Diabetic neuropathy is called peripheral, autonomic or spinal depending on the region of involvement. Peripheral involvement is more common than other region involvement and its prevalence in DM patients is observed to be 16-87%. Diabetic peripheral neuropathy (DPN) presents with numbness, tingling, paresthesia, muscle weakness and pain. These symptoms can start from the toes and progress to the leg and even the upper extremities. In diabetic peripheral neuropathy, pain is seen as burning, electric shock or sharp cold pain, increases at night and affects sleep quality. In these patients, daily living activities such as walking, climbing stairs, and sleeping are negatively affected by progressive DPN and pain, falls are observed, mood disorders are experienced, and the quality of life decreases.

Effect of Multitarget tDCS for Neuropathic Pain

This study aims to conduct a randomized controlled trial to evaluate the effect of multitarget transcranial direct current stimulation (tDCS) on pain, depression, anxiety, quality of life and sleep, in patients with neuropathic pain.

Relationship Between Neuropathic Pain and Geriatric Assessment Parameters in Patients Aged 80 Years and Older

This study aimed to determine the frequency of neuropathic pain in individuals aged 80 years and older and to evaluate the relationship between neuropathic pain and comprehensive geriatric assessment parameters.

A Study to Assess Safety, Tolerability and Exposure of 4ET1103 in Healthy Human Volunteers

This study will dose healthy human volunteers with either active drug (4ET1103) or placebo. Each study subject will receive a single dose of either active drug or placebo, and will then be monitored for safety, tolerability and exposure of active drug.

Intermittent Theta-Burst Stimulation for Lower-Limb Spasticity and Pain in Multiple Sclerosis

Spasticity and neuropathic pain are frequent and disabling symptoms of multiple sclerosis. Intermittent theta-burst stimulation (iTBS) is a non-invasive neuromodulation technique that may modulate cortical and corticospinal excitability and thereby improve motor symptoms and pain. This randomized, parallel-group, sham-controlled, assessor-blinded study will evaluate the clinical efficacy of active iTBS compared with sham stimulation in adults with multiple sclerosis and clinically significant lower-limb spasticity and pain. Participants will receive five stimulation sessions over one week. Spasticity, pain, patient-reported outcomes, and the electrophysiological H/M ratio will be assessed at baseline and at Weeks 2 and 4 after the intervention.

Daily, Encapsulated, Green Tea Extract to Mitigate Neuropathic Pain in Patients With Established Cancer-Associated Neuropathic Pain

The overall objective of this study is to test an intervention of green tea extract (GTE) to mitigate neuropathic pain in patients, specifically cancer survivors, receiving supportive palliative care. The central hypothesis is that daily, oral, encapsulated GTE will mitigate neuropathic pain, as longitudinally measured by the validated Douleur Neuropathique 4 (DN4) and blood protein biomarkers reported to be linked to the development and/or chronicity of neuropathic pain.

Empowered Relief for Caregivers

This study is testing a new program called Empowered Relief for Caregivers (ER-CY), designed to support caregivers of children and teens who live with chronic pain. ER-CY is a single two-hour class delivered online. It teaches skills for managing the stress of caring for a child in pain and for responding to a child's pain in helpful ways. Up to 80 caregivers of youth with chronic pain will take part in one ER-CY class and then complete surveys and a short interview over the following three months. The researchers want to learn two things: whether caregivers are willing and able to take part and find the program helpful and satisfying, and whether the program lowers caregiver distress and improves their child's day-to-day functioning. What is learned will help guide future programs and care for youth with chronic pain and their families.

Effects of CBD/CBD-A Oral Extract on Resting-state EEG and Neuropathic Pain Symptoms After SCI

The main purposes of this study are to (1) measure the effect of CBD/CBD-A on pain symptoms, pain intensity, pain unpleasantness, and skin sensitivity to hot and cold temperatures; and (2) measure the effect of CBD on brain electrical activity with electroencephalography (EEG).

Adrenocorticotropic Axis and Neuropathic Pain

Chronic pain is often associated with a chronic stress and HHSG axis plays a pivotal role in maintaining homeostasis. The literature reports that pain in patients treated with opioids, significant changes are taking place in this axis with a collapse in hormone concentrations that are correlated with the decline on tests of quality of life and psychological testing. The investigators hypothesis is that this "endocrinopathy" could also be present in patients treated for neuropathic pain with other drug classes as opiates (antidepressants, antiepileptics), and may explain, at least in part, the impairement of the quality of life of these patients.