Clinical Research Directory

Transcranial Direct Current Stimulation for Chemotherapy-Related Chronic Pain in Cancer Survivors

The goal of this clinical trial is to learn if transcranial direct current stimulation (tDCS) combined with a working-memory task can treat chronic pain and related emotional and cognitive problems after chemotherapy in adult cancer survivors. tDCS is a non-invasive and painless technique that uses a very weak electrical current, applied through two small electrodes on the head, to modulate the activity of certain brain areas. The main questions it aims to answer are: * Does tDCS reduce chronic pain intensity after chemotherapy in cancer survivors? * Does tDCS also reduce anxiety, depression, and cognitive problems, and improve the regulation of cortisol, a stress-related hormone? * Are the effects on pain, anxiety, depression, cognitive problems, and cortisol sustained when treatment continues with a maintenance phase of up to 2 months? Researchers will compare real tDCS to sham (placebo) tDCS, a look-alike procedure that does not deliver effective stimulation, to see if real tDCS works to reduce pain and improve these symptoms. Participants will: * Receive real or sham tDCS (assigned by chance) in 5 daily sessions over 1 week. Each session lasts 20 minutes: 10 minutes at rest and 10 minutes while doing a working-memory task * If they did not respond to sham tDCS, be offered 5 additional daily sessions of real tDCS * If they respond to treatment, continue with real tDCS twice a week for up to 2 months * Complete assessments of pain, mood, memory, attention, and quality of life before treatment, after each phase, and during and at the end of the maintenance phase * Collect saliva samples to measure cortisol

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.

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.

Simultaneous Engagement of Networks for Alleviating Pain (SENAP)

This trial is investigating the acceptability and efficacy of PFM-guided cortical stimulation for the treatment of central neuropathic pain.

Effect of TMS on Neuropathic Pain for Patients With Spinal Cord Injury

Patients will be randomly assigned to three groups using a randomization scheme: active primary motor cortex (M1) rTMS, active anterior cingulate cortex (ACC) rTMS, or sham M1 rTMS. Stimulation will be delivered using a Magstim Rapid2 Magnetic Stimulator (Magstim, Whitland, UK) with figure-of-eight active and sham coils or a double-cone coil, depending on the treatment group. All patients will receive 10 sessions of 5 Hz rTMS over two weeks under physician supervision. Stimulation intensity will be set at 90% of the resting motor threshold (RMT), determined from the contralateral first dorsal interosseous muscle following stimulation of the dominant hemisphere. Each session will consist of 10 trains of stimulation separated by 50-second intervals, delivering a total of 500 pulses. All patients will continue their conventional physical therapy programs throughout the study.

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.

Pediatric Electrocutaneous Analgesia for Children Experiencing Neuropathic Pain

This is a study evaluating the Scrambler Therapy device as a non-invasive treatment for neuropathic pain in pediatric oncology patients with metastatic bone disease. The primary goal is to assess changes in pain intensity and medication use, aiming to improve quality of life and reduce reliance on systemic pain medications.

Comparison Between Efficacy of Gabapentin and Carbamazepine in Neuropathic Pain of Guillain-Barré Syndrome Patients

This randomized controlled trial compared gabapentin with carbamazepine for the treatment of nerve-related pain in patients with Guillain-Barré syndrome who received plasma exchange. The study tested the hypothesis that pain scores after seven days of treatment differed between the two groups. The study was conducted at Medical Unit III, Lahore General Hospital, Lahore, and included 60 patients of either sex aged 16-65 years. Patients were randomly assigned by a lottery method to two equal groups of 30 patients each. One group received gabapentin 300 mg three times daily, while the other received carbamazepine 100 mg three times daily. Both treatments were administered after plasma exchange, and patients were followed for seven days. Pain severity was assessed using a numeric rating scale before treatment and after seven days. Mean pain scores after treatment were compared between the groups to assess their relative effectiveness. Age, sex, duration of Guillain-Barré syndrome, smoking, alcohol use, diabetes, and hypertension were recorded, and comparisons were also performed within subgroups defined by these characteristics.

Neuropathic Pain in Patients With Degenerative Lumbar Stenosis

Pre- and postoperative pain in patients with degenerative stenosis requires great attention, as it can mislead the doctor about treatment tactics. Neuropathic pain in the legs before and after the surgical procedure, as well as the residual or recurrent pain syndrome existing against this background, overshadow the patient's recovery and cast doubt on the fullness of the performed decompression. Neural compression in the spinal canal and back pain may be the cause of the patient's antalgic posture and sagittal imbalance as seen on X-Ray, to need for corrective interventions surgical procedure. Thus, it is necessary to clarify the role and the influence of the pain and its type on the perioperative period in patients with degenerative lumbar spinal stenosis.

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.

BreEStim Pre-trial

The overall goal is to evaluate the effectiveness of different stimulation protocol of a novel intervention - Breathing-controlled electrical stimulation (BreEStim) in managing neuropathic pain after spinal cord injury (SCI).

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.

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).

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.

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.

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.

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.

Insula Neuromodulation for Chronic Neuropathic Pain

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

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.