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Central Pain Syndrome clinical trials

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NCT ID: NCT06105788 Recruiting - Knee Osteoarthritis Clinical Trials

Upper and Lower Extremity Exercise and Exercise-Induced Hypoalgesia in Knee Osteoarthritis

Start date: November 15, 2023
Phase: N/A
Study type: Interventional

The objective of the study is to explore the effects of arm exercise (UE, arm ergometer) vs. leg exercise (LE, cycling ergometer) on exercise-induced hypoalgesia (EIH), central pain mechanisms and knee pain in people with knee osteoarthritis (OA). Furthermore, we will explore relations of socioeconomic status, racial discrimination, acculturative stress, and autonomic function to exercise effects on EIH, central pain mechanisms, and knee pain. This will be a pilot randomized cross-over study where all participants undergo Day 1 (baseline assessments), Day 2 (UE or LE), and Day 3 (UE or LE).

NCT ID: NCT05625178 Recruiting - Knee Osteoarthritis Clinical Trials

Effects of Vagus Nerve Stimulation on Central Pain Sensitivity & Parasympathetic Function in Knee Osteoarthritis

Start date: December 15, 2022
Phase: N/A
Study type: Interventional

The goal of this clinical trial is to test the feasibility and effectiveness of transcutaneous vagus nerve stimulation (tVNS) to the ear on pain and autonomic function in people with knee osteoarthritis (OA). The main questions it aims to answer are: 1) whether tVNS is feasible to be used in people with knee OA; 2) whether tVNS demonstrates the trend in improving knee pain; and 3) whether tVNS has physiological effects on autonomic function (e.g., parasympathetic function) and pain perception in the central nervous system such as brain (i.e., central pain mechanisms). Participants will be asked to complete a battery of self-reported questionnaires about their demographic and behavioral information, ethnicity, pain, sleep, psychological/emotional symptoms. Subsequently, participants will complete baseline assessment where investigators will assess their knee pain severity, central pain sensitivity, and heart rate variability (a measurement for autonomic function). Then participants will receive a 60-minute tVNS. Investigators will redo the same assessment as baseline assessment after tVNS intervention to see the degree of knee pain, central pain sensitivity, and autonomic function changes. At the end of the study, investigators will assess their satisfaction level with the tVNS intervention and the feasibility of the intervention (e.g., completion rate, side effects).

NCT ID: NCT03748290 Recruiting - Clinical trials for Spinal Cord Injuries

Effect of Preventional Drug Therapy on Pain Regulation Mechanisms Among SCI

Start date: August 23, 2018
Phase: Phase 4
Study type: Interventional

Central neuropathic pain (CNP) is defined as chronic pain due to injury or disease in the central nervous system. This pain is most common among people with a spinal cord injuries (SCI), with a prevalence of about 50%. The central pain usually develops within a few months of spinal cord injury - and this period is significance in terms of this research work. This pain is one of the most complex and challenging pain syndromes. One of the reasons for this stems from its adherence to most treatments. Another reason is that there is partial information about the mechanism responsible for its development. Animal studies suggest that it is possible to prevent and / or reduce its development or reduce its strength by preventive treatment (given immediately after the injury). Currently, the treatments found to prevent or reduce central pain in animals are anti Inflammation and neuronal excitability suppressors such as interleukin 10. The purpose of this study,is to explore whether pre-treatment with pregabalin prior to the development of the central pain will prevent the incidence of pain or reduce its intensity by improving pain regulation and reducing hypersensitivity. The goal of the pharmacotherapy is to reduce the hypersensitivity- lyrica is used to reduce chronic neuropathic pain by reducing the degree of hypersensitivity in the pain system. the objectives of this study are to examine whether early treatment of central pain can prevent or reduce the incidence of pain by improving pain regulation and reducing hypersensitivity. That is, whether there will be a difference between those who take Lyrica-Pregabalin (a drug that reduces hypersensitivity of pain) compared to placebo. Methods: A randomized, double-blind, placebo-controlled study in which people with a fresh SCI will receive lyrica or placebo as soon as possible from their arrival at the rehabilitation hospital for 2-3 months during which pain system characteristics will be measured and monitored for central pain development.