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Neuralgia, Postherpetic clinical trials

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NCT ID: NCT06420778 Recruiting - Clinical trials for Postherpetic Neuralgia

A Randomized Controlled Study on the Treatment of Postherpetic Neuralgia in the Head and Face With Superficial Needling Combined With Electroacupuncture

Start date: January 1, 2023
Phase: N/A
Study type: Interventional

Based on the inclusion and exclusion criteria, patients with head and face PHN who met the requirements were selected as trial subjects, and the efficacy was clarified in a randomized controlled design trial. The visual analog score VAS was used as the primary evaluation index, and the depression self-assessment scale score , Hamilton depression scale, Pittsburgh sleep quality index scale, and quality of life evaluation scale (SF-36) were used as the secondary evaluation indexes, and oral pregabalin was used as the control group, and the subjects in the pregabalin and the plexus superficial stabbing combined with electroacupuncture groups were observed respectively at the time of Before treatment, immediately after the first treatment, after 2 days of treatment, after 2 weeks of treatment, after 4 weeks of treatment, after 1 month of follow-up after the end of treatment and after 2 months of follow-up after the end of treatment.

NCT ID: NCT06290661 Recruiting - Neuropathic Pain Clinical Trials

Clinical Trial of the Safety and Efficacy of Peripheral Nerve Stimulation in the Treatment of Postherpetic Neuralgia.

Start date: February 9, 2023
Phase: N/A
Study type: Interventional

The goal of this clinical trial is to evaluate safety and efficacy of percutaneous peripheral nerve stimulation in patients with postherpetic neuralgia. The main questions it aims to answer are: 1. The efficacy of percutaneous peripheral nerve stimulation in patients with postherpetic neuralgia 2. The safety of percutaneous peripheral nerve stimulation in patients with postherpetic neuralgia Participants are going to undergo procedure that implant peripheral nerve stimulation electrode produced by Jiangsu CED Medtech Co., Ltd. Then the subjects, whose VAS scores decrease more 30% than baseline level, are classified into two groups randomly. One of the group receiving active stimulation called trial group and another receiving placebo stimulation called control group. All subjects are required to make their own subjects' pain diary to record VSA score before and after implantation until at the end of follow-up. Also, participants are asked to report use of analgesic medications, number of awakenings and adverse events. Researchers will compare pain scores between the two groups to see if peripheral nerve stimulation is effective to patients with postherpetic neuralgia.

NCT ID: NCT06218784 Recruiting - Pain Clinical Trials

A MAD Study to Evaluate the Safety, Tolerability and PK/PD of iN1011-N17 in Healthy Volunteers and PHN Patients.

Start date: November 11, 2022
Phase: Phase 1
Study type: Interventional

This study is a 3-part, Double-blind, Randomized, Placebo-controlled, Multiple Ascending Dose Study to Evaluate Safety, Tolerability, Pharmacokinetics/Pharmacodynamic properties of iN1011-N17 after Oral Administration in Healthy Volunteers and Post-Herpetic Neuralgia patients, and to assess the relative bioavailability of Mesylate vs Hydrochloride salt capsules of iN1011-N17 in Healthy volunteers.

NCT ID: NCT06155487 Recruiting - Neuropathic Pain Clinical Trials

A Study to Investigate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics After Oral Administration of AJH-2947 in Healthy Korean and/or Caucasian Adult Male Subjects

Start date: November 27, 2023
Phase: Phase 1
Study type: Interventional

Preliminary evaluate of pharmacokinetics, pharmacodynamics, safety and tolerability after oral administration of AJH-2947 in healthy Korean or Caucasian male subjects

NCT ID: NCT06091020 Recruiting - Clinical trials for Moderate to Severe Chronic Peripheral Neuropathic Pain (PNP) Due to Postherpetic Neuralgia (PHN) or Peripheral Nerve Injury

A Clinical Trial to Investigate Efficacy and Safety of NT 201 Injections Compared With Placebo Injections in Participants Aged 18 Years and Older With Chronic Nerve Pain After Shingles or Nerve Injury

PaiNT
Start date: November 22, 2023
Phase: Phase 2
Study type: Interventional

In this clinical trial, participants with nerve pain after shingles or nerve injury will receive injections with NT 201 or placebo. The purpose is to measure the decrease of nerve pain with NT 201 compared to placebo. Trial details include: - Trial duration: 22-23 weeks; - Treatment duration: 1 injection visit with a 20-week follow-up period; - Visit frequency: 2 remote visits by phone/video call (1 week and 12 weeks after the injection); 2 on-site visits (6 weeks and 20 weeks after the injection).

NCT ID: NCT05912738 Recruiting - Clinical trials for Shear Wave Elastography

Muscle Elasticity Assessment of Postherpetic Neuralgia Using Elasticity Ultrasound

Start date: August 14, 2023
Phase:
Study type: Observational [Patient Registry]

Herpes zoster (HZ), also known as shingles, is caused by the varicella-zoster virus (VZV). Approximately 1/4 of the global population is affected by HZ, with statistics showing that about 90% of shingles patients experience acute neuralgia, and about 1/3 develop postherpetic neuralgia (PHN) after shingles. In PHN patients, about 30%-50% of the pain can persist for more than one year, and some cases can last for more than 10 years. PHN is a common complication of HZ characterized by intense pain in the area where the rash has healed, often described as burning, electric shock-like, or stabbing pain, severely affecting patients' sleep, emotions, work, and daily life. Additionally, approximately 43% of PHN patients exhibit symptoms of toxic anxiety or depression, significantly impacting their quality of life and increasing the societal burden. Due to the global aging population, the incidence of HZ and PHN is expected to significantly increase in the next 10 years, making effective prevention and treatment of PHN an urgent health issue. Although various treatments are available for PHN, a small number of patients remain unresponsive to multiple therapies, resulting in treatment-resistant chronic pain. The lack of a clear understanding of the underlying mechanisms contributes to the suboptimal treatment outcomes for PHN. Elastography, a technique that quantifies the mechanical properties of tissues by measuring their natural elasticity, trauma, degeneration, and healing processes, has shown promise as an innovative approach. Shear wave elastography (SWE) has been used to study the biomechanical characteristics of skeletal muscles by measuring the propagation speed of shear waves induced by ultrasound to quantify the shear elastic modulus, which characterizes the stiffness of soft tissues. In this study, the investigators intend to use elastography to observe the elasticity of muscle tissue in the lesions of PHN patients, with the unaffected side serving as a control. Elastography offers non-invasive, convenient, and straightforward advantages, further contributing to providing new directions for treatment and revealing the role of muscle tissue in PHN by offering new evidence. It also offers new treatment options and targets for PHN patients.

NCT ID: NCT05754190 Recruiting - Chronic Pain Clinical Trials

Assessing Symptom and Mood Dynamics in Pain Using the Smartphone Application SOMA

Start date: June 20, 2023
Phase:
Study type: Observational

This study relies on the use of a smartphone application (SOMA) that the investigators developed for tracking daily mood, pain, and activity status in acute pain, chronic pain, and healthy controls over four months.The primary goal of the study is to use fluctuations in daily self-reported symptoms to identify computational predictors of acute-chronic pain transition, pain recovery, and/or chronic pain maintenance or flareups. The general study will include anyone with current acute or chronic pain, while a smaller sub-study will use a subset of patients from the chronic pain group who have been diagnosed with chronic low back pain, failed back surgery syndrome, or fibromyalgia. These sub-study participants will first take part in one in-person EEG testing session while completing simple interoception and reinforcement learning tasks and then begin daily use of the SOMA app. Electrophysiologic and behavioral data from the EEG testing session will be used to determine predictors of treatment response in the sub-study.

NCT ID: NCT05593237 Recruiting - Pain, Postoperative Clinical Trials

Transcranial Magnetic Stimulation for Chronic Neuropathic Pain

Start date: April 25, 2022
Phase: N/A
Study type: Interventional

Chronic neuropathic pain is defined as pain caused by a lesion or disease of the somatosensory nervous system. It is highly prevalent, debilitating, and challenging to treat. Current available treatments have low efficacy, high side effect burden, and are prone to misuse and dependence. Emerging evidence suggests that the transition from acute to chronic neuropathic pain is associated with reorganization of central brain circuits involved in pain processing. Repetitive transcranial magnetic stimulation (rTMS) is a promising alternative treatment that uses focused magnetic pulses to non-invasively modulate brain activity, a strategy that can potentially circumvent the adverse effects of available treatments for pain. RTMS is FDA-approved for the treatment of major depressive disorder, obsessive-compulsive disorder, and migraine, and has been shown to reduce pain scores when applied to the contralateral motor cortex (M1). However, available studies of rTMS for chronic neuropathic pain typically show variable and often short-lived benefits, and many aspects of optimal treatment remain unknown, including ideal rTMS stimulation parameters, duration of treatment, and relationship to the underlying pain etiology. Here the investigators propose to evaluate the efficacy of high frequency rTMS to M1, the region with most evidence of benefit in chronic neuropathic pain, and to use functional magnetic resonance imaging (fMRI) to identify alternative rTMS targets for participants that do not respond to stimulation at M1. The central aim is to evaluate the pain relieving efficacy of multi-session high-frequency M1 TMS for pain. In secondary exploratory analyses, the investigator propose to investigate patient characteristic that are predictive of responsive to M1 rTMS and identify viable alternative stimulation targets in non-responders to M1 rTMS.

NCT ID: NCT05568186 Recruiting - Clinical trials for Postherpetic Neuralgia

Correlation Between Thermal Patterns of Infrared Thermal Imaging and Clinical Phenotype in Patients With Postherpetic Neuralgia

Start date: October 1, 2022
Phase:
Study type: Observational

Postherpetic neuralgia (PHN) is the most frequent complication of herpes zoster(HZ) and is defined as pain persisting for >1month after the healing of herpetic skin lesion or pain persisting for > 3 months following the onset of HZ. PHN manifests as spontaneous throbbing, stabbing, or burning, usually accompanied by various abnormal sensory symptoms , which affect 5-20% of patients with HZ. Due to the lack of accurate and objective auxiliary examination tools, it is difficult for diagnosis and treatment of PHN. As a non-invasive examination method, infrared thermal imaging (IRT) can play a role in the diagnosis and treatment of neuropathic pain by objectively reflecting the changes and distribution characteristics of human body surface temperature. However, there are few studies on the relationship between clinical phenotype and thermal infrared image temperature changes in PHN patients, and the relationship between the thermal pattern of skin temperature and the duration of disease and treatment progress in PHN patients has not been fully elucidated. This study was conducted to investigate the relationship of thermal imaging data with the duration of the disease, clinical phenotype, treatment effect, in order to explore the role of infrared thermal imaging in the diagnosis and treatment of PHN. Methods:all PHN patients will included. At each visit, a pain NRS score was performed, and clinical phenotypes were tested and labeled, including: allodynia, numbness, itching, heat sensation, cold sensation, and the most painful area(MPA). Infrared thermal imaging was performed, the Average Relative Temperature (ART) within the affected area and the contralateral area was compared. The relationship between the temperature change and duration of the disease, clinical phenotype, treatment effect was assessed.

NCT ID: NCT04880408 Recruiting - Pain Clinical Trials

Morphological and Metabolic Changes of Dorsal Root Ganglion and Sympathetic Ganglion in Patients With Postherpetic Neuralgia on MRI

Start date: January 1, 2021
Phase:
Study type: Observational

Object: Postherpetic neuralgia (PHN) is pain that persists for 1-3 months after herpes zoster onset. It is the most common complication of herpes zoster and occurs in 15-40% of patients with herpes zoster. PHN has been suggested to be related with the lesion of doral root ganglion (DRG). However, the studies are almost limited to autopsies and animals , and the mechanism of PHN is still unclear. This study was conducted to investigate morphological and metabolic changes of DRG and sympathetic ganglion in patients with postherpetic neuralgia on MRI. Method: 30 patients diagnosed as PHN were recruited. The volume and fractional anisotropy of DRG of lesion dermatomes were measured under MRI, and compared with contralateral and adjacent DRG. The volume and fractional anisotropy of sympathetic ganglion of lesion dermatomes were also measured under MRI, and compared with contralateral and adjacent sympathetic ganglion.Then, the association between clinical phenotypes and DRG changes were analyzed.