View clinical trials related to Complex Regional Pain Syndromes.
Filter by:Patients will then be randomized via a web-based randomization system Redcap Allocation will be stratified based on the presence of a pre-existing spinal cord stimulator to either the nitrous oxide study group or the oxygen control group. The nitrous oxide group will receive 50% nitrous oxide mixed with 50% oxygen, and the control group will receive 50% oxygen (oxygen plus air mixture). Both groups will undergo inhalation therapy for a duration of 2 hours via an FDA-approved mask breathing circuit. Vital signs (blood pressure, respiratory rate, heart rate) will be monitored every 30 minutes. Pulse oximetry monitoring will be continuous. Patients will be monitored for side effects including nausea, vomiting, desaturation, sedation, respiratory depression, and dizziness. Patients and other involved providers will be blinded to the treatment type.
Complex Regional Pain Syndrome (CRPS) is a severe and complex chronic pain condition in children. Many psychosocial factors impact its development and recovery. CRPS has a strong central component, which is reflected by structural and functional changes in the brain. However, the interaction between these cerebral changes and trajectory of recovery has been seldom investigated to date. Furthermore, interactions between cerebral changes and psychosocial factors, which might affect trajectory of recovery, are unknown. The aim of this study is to identify the psychosocial factors and cerebral changes that predict the trajectory of recovery from CRPS. Children between the ages of 10 and 17 years will be enrolled with one of their parents or legal guardians for this study. Three populations will be recruited: patients with CRPS undergoing treatment at the Functional Independence Restoration Program (FIRST), patients with CRPS undergoing treatment at the Pain Management Center and matching healthy controls. Participants will undergo three sessions: the first session will be scheduled immediately before or as soon as possible at the beginning of the patients' treatment; the second session will take place at the end of the patients' treatment; the last session will be scheduled six months post-treatment. The timing of the sessions of the healthy participants will follow a schedule similar to the FIRST patients. Each session will last approximately three hours and include acquisition of psychosocial, psychophysical, and brain imaging data in the child participants, as well as acquisition of psychosocial data in the parent participants.
Complex Regional Pain Syndrome (CRPS) is a constellation of pain symptoms which are associated with impairment in mood, social and physical function. Spinal Cord Stimulation (SCS), a technique of placing electrodes into the epidural space is a validated treatment for Complex Regional Pain Syndrome . Treatment of CRPS with SCS, in combination with physical therapy, reduced pain to a greater degree than physical therapy alone. 40%-50% of CRPS patients achieve >50% pain relief with SCS using dorsal column stimulation . Dorsal Root Ganglion (DRG) SCS has also recently demonstrated clinical efficacy in patients with CRPS and peripheral causalgia . The hypothesis is that DRG stimulation is non-inferior to dorsal column SCS in patients with CRPS who have failed to respond to a course of analgesics and physical therapy. The aim to assess functional, quality of life, patient satisfaction and medication requirements in subjects treated with neuromodulation for CRPS and contrast outcomes amongst subjects treated with DRG SCS and dorsal column SCS.
A pilot randomized controlled trial to assess feasibility, acceptability and generate outcome domains for a future RCT testing the efficacy of immersive virtual reality on pain intensity in pediatric amplified musculoskeletal pain syndrome.
SPECIFIC AIMS Pain in both youth and adults is a complex, subjective and personal experience, and remains poorly understood. One particularly perplexing dimension of some forms of pain is the tendency of pain to spread outside of an affected body site to adjacent location, and then to unaffected body sites. Such widespread pain may reflect an altered spatial tuning of somatosensory processing, such that lateral inhibition is diminished, thereby allowing pain to spread. To date, no therapies exist which are designed specifically to diminish or even reverse the spatial spread of pain. However, training in two-point discrimination holds the potential to retune spatial aspects of somatosensory processing and may represent a novel therapy for widespread pain. Thus, the present investigation will test the following aims: Aim 1. Do youth with chronic pain have disrupted spatial tuning of somatosensory processing? Deficits in two point tactile discrimination have long been noted in adults with chronic pain, but such deficits remain poorly documented in pediatric chronic pain patients. In order to determine if such deficits exist, youth with both chronic pain and healthy youth will undergo assessment of two point discrimination thresholds. Aim 2. Does two-point discrimination training result in diminished pain and disability in youth with somatic pain? After initial characterization of tactile discrimination thresholds, youth with chronic pain will participate in multiple sessions of either two-point discrimination training or a single-point spatially-directed attentional control condition. Training will involve up to 9 additional sessions. Efficacy of training will be assessed by 1) reductions in the spatial extent of pain, 2) reductions in pain intensity and unpleasantness, and 3) reductions in pain-related disability.
Objective: The primary aim is to evaluate the efficacy of botulinum toxin A in reducing overall limb pain in patients with complex regional pain syndrome (CRPS). Additionally the investigators would like to see if quality of life is improved and disability scores decreased. Research Design: This is a double blinded, randomized cross-over study that will be conducted over a 7 month period. It is a pilot study that will include twenty subjects recruited from the Neurology CRPS clinic at VA Connecticut and from outside VA hospitals within a 150 mile radius. Subjects will receive an intramuscular injection Treatment A which is only 1% lidocaine or Treatment B which is mixture of botulinum toxin A + 1% lidocaine in the affected limb only. This is a cross over study where patients will receive Treatment A or B initially during the first of four study visits and during the third study visit while receive whichever treatment not given during the first visit. Dr. Sameer Ali, VA neurology fellow, will be blinded when administering the treatments. Dr. Hajime Tokuno, VA neurologist who is the principal investigator of the trial will prepare the treatments. Clinical pharmacy will be randomizing the treatments. Dr. Tokuno will not be blinded as he needs to know which treatment has been given in case of complications. Impact/Significance: The significance of this study is the possible discovery of a new, safer, less invasive, and more efficacious therapeutic option for patients suffering from CRPS. Currently medical management with neuropathic pain meds, interventions such as sympathetic nerve blocks and ketamine infusion has helped some patients and not others. The investigators are trying to see whether either of the two treatments and especially the treatment with botulinum toxin may be a more viable alternative than existing modalities.
The objective of this prospective, observational study is to determine the association between the composition of the gut microbiota and the severity and persistence of Complex Regional Pain Syndrome symptoms (Study A). The objective of Study B, a longitudinal study of microbiota biomarkers of patients with newly diagnosed CRPS is to determine if the researchers can predict which patients are more likely to recover compared to those who do not. A secondary objective of both studies is to examine cognitive flexibility in relation to outcomes (study A and B).
The aim of this trial was to investigate the efficacy and safety of intravenous neridronic acid in subjects with Complex Regional Pain Syndrome (CRPS). The trial consisted of an Enrollment Period lasting up to 60 days, Treatment Period A consisting of 4 infusions (neridronic acid 100 mg or placebo) over 10 days, and a Follow-up Period 1 until Week 26. At Week 26, participants meeting the pre-specified criteria entered the open-label Treatment Period B with 4 additional infusions (neridronic acid) over 10 days and follow-up visits until Week 52. Participants not meeting the pre-specified criteria to continue into Treatment Period B continued in Follow-up Period 2 until Week 52.
The aim of this trial was to investigate the efficacy and safety of intravenous neridronic acid in subjects with Complex Regional Pain Syndrome (CRPS). The trial consisted of an Enrollment Period lasting up to 60 days, Treatment Period A consisting of 4 infusions (neridronic acid or placebo) over 10 days, and a Follow-up Period 1 until Week 26. At Week 26, participants not meeting the pre-specified criteria to continue into Treatment Period B continued in Follow-up Period 2 until Week 52. Participants meeting the pre-specified criteria entered the open-label Treatment Period B with 4 additional infusions (neridronic acid) over 10 days and follow-up visits until Week 52.
Pediatric chronic pain disorders are common and consequential in Western societies, occurring in 25-80% of population-based samples with a median prevalence of 11-38% and significant pain-related disability in 3-5% of these children. Pediatric chronic pain disorders have a negative impact on many aspects children's lives including mobility, night sleep, school attendance, peer relationships, family functioning, and overall quality of life. Parents caring for these children risk loss of parental earnings, and these disorders place a high financial burden on healthcare. In a nationally representative sample in the United States, costs related to health care were significantly higher ($1,339 per capita) for children with chronic pain disorders compared to children with common pediatric health conditions of ADHD, asthma and obesity. In children with clinical chronic pain conditions, such as daily headaches or fibromyalgia, chronic pain is presumably a persistent state of an overly excitable nervous system. This phenomenon known as central sensitization is characterized by excessive pain sensitivity that occurs in response to non-painful stimuli, such as light touch or contact with clothing, and slightly painful stimuli, such as a light pinprick. This hypersensitivity results from peculiar changes in the working of the central nervous system, including the spinal cord and brain, and leads to unusual intensification of pain that is out of proportion to the inciting stimulus. For example, light touch from clothing on the skin is perceived as intensely painful. Central sensitization is also thought to contribute to the spreading of pain to other body sites in several chronic pain disorders. In chronic pain disorders, the function of the central descending inhibitory modulating system is likely impaired and is traditionally measured by a phenomenon identified as "conditioned pain modulation (CPM)" and more recently measured by a phenomenon of "offset analgesia" (OA). The OA test is more robust than the CPM test and likely more acceptable to most patients, especially children, because it is shorter in duration and uses a more tolerable painful stimulus. Compared to CPM, the OA test is more tolerable because it is conducted using a painful test stimulus that is less than the maximal (suprathreshold). Additionally, the time of exposure to the painful stimulus is significantly shorter, a few seconds, in the OA test compared to CPM. The central descending inhibitory pathway that modulates pain as tested by OA is functional and mature in healthy children as young as 6 year of age, but it has yet to be investigated in children with chronic pain disorders. The investigators plan to test OA responses in a population of common pediatric pain disorders with overlapping symptomology attributed to central sensitization (such as chronic musculoskeletal pain, chronic abdominal pain and chronic headaches and chronic regional pain syndromes) and compare their responses with an age- and sex-matched control group. The characteristics of OA responses in each group will allow for assessment of the presence or absence of central sensitization as a mechanism driving the persistent, abnormal pain in a subgroup of these chronic pain disorders. The investigators hypothesize that central sensitization is the potential contributory mechanism of the central nervous system heightened sensitivity to two testing stimuli of painful (moderate heat discomfort sensation) and non-painful (warmth sensation) in children with chronic pain disorders. These types of sensations mimic those that children would be expected to experience their natural environment during typical activities of daily living such as showering/bathing in warm water or hand washing. Additionally, the Pain Sensitivity Questionnaire (PSQ) and Central Sensitization Inventory (CSI) will be used as clinical screening tools for subjective report of sensitization symptoms, and are simple and easy to administer in a clinical setting. The investigators hypothesize that these measures will correlate with the objective offset analgesia responses thus allowing for assessment of central sensitization in children with chronic pain disorders. These tests are advantageous because they are feasible to perform rapidly in a clinic setting and have utility for measurement of patient responses to therapeutic interventions. If this concept is supported by this study, future studies could utilize OA to examine the effects of various pharmacological and physical interventions used to manage children with chronic pain disorders including intensive interdisciplinary rehabilitation or specific interventions such as aerobic exercise, which likely modulates pain via similar mechanisms.