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Showing 1–24 of 94 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Complex Regional Pain Syndromes Clear all
Completed Phase 3 Interventional Results available

Safety Study of HZT-501 in Patients Who Require Long-Term Daily Non-steroidal Anti-inflammatory Drug Treatment

NCT00984815
View directory record Official record
Conditions
Osteoarthritis, Rheumatoid Arthritis, Chronic Low Back Pain, Chronic Regional Pain Syndrome, Chronic Soft Tissue Pain
Interventions
HZT-501
Drug
Lead sponsor
Amgen
Industry
Eligibility
40 Years to 80 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
4
States / cities
Chicago, Illinois • Morton Grove, Illinois • Duncansville, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2024 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Phase 3 Interventional

Study to Evaluate the Efficacy and Safety of OraVescent Fentanyl Citrate Treatment for the Management of Breakthrough Pain in Opioid-Tolerant Patients With Noncancer-Related Chronic Pain

NCT00343733
View directory record Official record
Conditions
Pain
Interventions
OraVescent Fentanyl
Drug
Lead sponsor
Cephalon
Industry
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
21
States / cities
Hot Springs, Arkansas • Los Gatos, California • Oxnard, California + 16 more
Source: ClinicalTrials.gov public record
Updated May 8, 2014 · Synced Sep 14, 2026, 2:50 PM EDT
Terminated Not applicable Interventional

Autonomic Dysfunction and Spinal Cord Stimulation in Complex Regional Pain Syndrome

NCT00780390
View directory record Official record
Conditions
Complex Regional Pain Syndrome
Interventions
Autonomic Function Assessment
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

[18F]FTC-146 PET/MRI in Healthy Volunteers and in CRPS and Sciatica

NCT02753101
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Sciatica
Interventions
[18F]-FTC-146
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 4, 2018 · Synced Sep 14, 2026, 2:50 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Intravenous Neridronic Acid in CRPS

NCT03530345
View directory record Official record
Conditions
Complex Regional Pain Syndrome (CRPS)
Interventions
Neridronic acid 100 mg, Placebo
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years and older
Enrollment
182 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
39
States / cities
Huntsville, Alabama • Mobile, Alabama • Peoria, Arizona + 35 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Phase 3 Interventional Results available

Double-Blind Follow-on Safety Study of HZT-501 (Ibuprofen 800 mg/Famotidine 26.6 mg) in Subjects Who Have Completed Participation in HZ-CA-301 (NCT00450658) or HZ-CA-303 (NCT00450216)

NCT00613106
View directory record Official record
Conditions
Osteoarthritis, Rheumatoid Arthritis, Chronic Low Back Pain, Chronic Regional Pain Syndrome, Chronic Soft Tissue Pain
Interventions
HZT-501, Ibuprofen
Drug
Lead sponsor
Amgen
Industry
Eligibility
40 Years to 81 Years
Enrollment
179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 16, 2024 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Not applicable Interventional Results available

Intraoperative Neuromonitoring Recording With a Novel SCS Paddle

NCT05045625
View directory record Official record
Conditions
Chronic Pain, Neuropathic Pain, Failed Back Surgery Syndrome, Complex Regional Pain Syndromes
Interventions
HD Study Electrode
Device
Lead sponsor
Albany Medical College
Other
Eligibility
18 Years to 90 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Albany, New York
Source: ClinicalTrials.gov public record
Updated Feb 28, 2023 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Not applicable Interventional

Effectiveness of Virtual Reality in Hand Therapy

NCT05188040
View directory record Official record
Conditions
Distal Radius Fracture, Chronic Regional Pain Syndrome, Flexor Tendon Rupture
Interventions
Virtual Reality Exercises
Other
Lead sponsor
Timothy Uhl
Other
Eligibility
18 Years to 99 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Georgetown, Kentucky
Source: ClinicalTrials.gov public record
Updated Nov 21, 2023 · Synced Sep 14, 2026, 2:50 PM EDT
Terminated Phase 2 Interventional Results available

Study to Evaluate the Efficacy and Safety of Lenalidomide in the Treatment of Complex Regional Pain Syndrome Type 1

NCT00109772
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Type I
Interventions
lenalidomide, Placebo
Drug
Lead sponsor
Celgene Corporation
Industry
Eligibility
18 Years and older
Enrollment
184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
27
States / cities
Peoria, Arizona • La Jolla, California • Loma Linda, California + 23 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2013 · Synced Sep 14, 2026, 2:50 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Positron Emission Tomography to Measure Pain and Pain Control

NCT00001307
View directory record Official record
Conditions
Healthy, Hyperalgesia, Pain, Peripheral Nervous System Disease
Interventions
Oxygen-15 Water, Capsaicin
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
Not listed
Enrollment
273 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 14, 2026, 2:50 PM EDT
Completed No phase listed Observational

Evaluation and Diagnosis of People With Pain and Fatigue Syndromes

NCT00677157
View directory record Official record
Conditions
Fatigue
Interventions
Not listed
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
18 Years and older
Enrollment
367 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 21, 2020 · Synced Sep 14, 2026, 2:50 PM EDT
Withdrawn Not applicable Interventional

TNF-alpha Inhibition in CRPS: A Randomized Controlled Trial

NCT02031211
View directory record Official record
Conditions
CRPS, Chronic Regional Pain Syndrome
Interventions
Etanercept, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
10 Years to 17 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Oct 13, 2016 · Synced Sep 14, 2026, 2:50 PM EDT
Active, not recruiting Not applicable Interventional

Transcranial Magnetic Stimulation for Chronic Neuropathic Pain

NCT05593237
View directory record Official record
Conditions
Chronic Neuropathic Pain, Post-Stroke Pain, Trigeminal Neuralgia, Nerve Injury, Spinal Cord Injuries, Pain, Postoperative, Complex Regional Pain Syndromes, Post-herpetic Neuralgia, Nerve Root Avulsion
Interventions
High Frequency rTMS, Low Frequency rTMS
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 80 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 14, 2026, 2:50 PM EDT
Withdrawn Phase 1Phase 2 Interventional

Adipose Stem/Stromal Cells in RSD, CRPS, Fibromyalgia

NCT02987855
View directory record Official record
Conditions
RSD (Reflex Sympathetic Dystrophy), CRPS - Complex Regional Pain Syndrome Type I, Fibromyalgia
Interventions
Lipoaspiration, ADcSVF isolation, Normal Saline IV
Procedure
Lead sponsor
Healeon Medical Inc
Industry
Eligibility
16 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Stevensville, Montana
Source: ClinicalTrials.gov public record
Updated Feb 15, 2021 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Phase 2 Interventional

A Study of CC-5013 in the Treatment of Complex Regional Pain Syndrome (CRPS)

NCT00067743
View directory record Official record
Conditions
Complex Regional Pain Syndrome (RSD)
Interventions
Lenalidomide
Drug
Lead sponsor
Celgene Corporation
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
6
States / cities
La Jolla, California • Baltimore, Maryland • Chapel Hill, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 2, 2008 · Synced Sep 14, 2026, 2:50 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Intravenous Neridronic Acid in Complex Regional Pain Syndrome (CRPS)

NCT03560986
View directory record Official record
Conditions
Complex Regional Pain Syndrome (CRPS)
Interventions
Neridronic acid 100 mg, Placebo
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years and older
Enrollment
267 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
41
States / cities
Cottonwood, Arizona • Tempe, Arizona • Tucson, Arizona + 34 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2020 · Synced Sep 14, 2026, 2:50 PM EDT
Recruiting Not applicable Interventional

Closed-Loop Deep Brain Stimulation for Refractory Chronic Pain

NCT04144972
View directory record Official record
Conditions
Spinal Cord Injuries, Nerve Injury, Pain, Postoperative, Post Herpetic Neuralgia, Complex Regional Pain Syndromes, Post-Stroke Pain, Post Radiation Brain Injury, Post Radiation Plexopathy, Nerve Root Avulsion
Interventions
Medtronic Summit RC+S or Percept RC
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
22 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2030
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 14, 2026, 2:50 PM EDT
Terminated Not applicable Interventional

Modulating Neuropathic Pain With Transcranial Direct Current Stimulation

NCT04581525
View directory record Official record
Conditions
Pain, Neuropathic, Complex Regional Pain Syndromes, Phantom Limb Pain, Spinal Cord Injuries
Interventions
transcranial direct current stimulation
Device
Lead sponsor
Susan McDowell
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 13, 2021 · Synced Sep 14, 2026, 2:50 PM EDT
Enrolling by invitation Phase 4 Interventional

Low Dose Naltrexone Therapy for Complex Regional Pain Syndrome

NCT06306157
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Chronic Pain, Causalgia, Complex Regional Pain Syndrome Type I, Complex Regional Pain Syndrome Type II
Interventions
Low dose naltrexone, Placebo sugar capsules
Drug
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Not applicable Interventional Results available

Transcranial Magnetic Stimulation (TMS) for CRPS

NCT02067273
View directory record Official record
Conditions
Complex Regional Pain Syndrome (CRPS)
Interventions
Transcranial Magnetic Stimulation (TMS)
Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 14, 2017 · Synced Sep 14, 2026, 2:50 PM EDT
Recruiting Not applicable Interventional

Low-Dose Naltrexone for the Treatment of Complex Regional Pain Syndrome

NCT02502162
View directory record Official record
Conditions
Complex Regional Pain Syndrome
Interventions
LDN, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 28, 2025 · Synced Sep 14, 2026, 2:50 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

CSS-SR Validation Study

NCT06798493
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Pain
Interventions
Complex Regional Pain Syndrome (CRPS) Severity Score - Self Report
Other
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Sep 14, 2026, 2:50 PM EDT
Suspended Phase 2 Interventional

Ketamine HCl Prolonged Release Oral Tablets for CRPS

NCT06419985
View directory record Official record
Conditions
Complex Regional Pain Syndromes
Interventions
80mg/day Ketamine HCl Prolonged Release, 160mg/day Ketamine HCl Prolonged Release
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 64 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 14, 2026, 2:50 PM EDT
Completed Phase 3 Interventional

A Study of the Effect of Lenalidamide on Complex Regional Pain Syndrome Type 1

NCT00166452
View directory record Official record
Conditions
Complex Regional Pain Syndrome, Type 1
Interventions
Lenalidamide
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 22, 2011 · Synced Sep 14, 2026, 2:50 PM EDT