| Recruiting | Investigation on the Status Quo of Hyperalgesia in Patients After Thoracoscopic Operation and Study on the Eff NCT06790914 | Fujian Medical University Union Hospital | N/A |
| Recruiting | STTEPP: Safety, Tolerability and Dose Limiting Toxicity of Lacosamide in Patients With Painful Chronic Pancrea NCT05603702 | Indiana University | Phase 1 |
| Terminated | Effect of Ultra-low Dose Naloxone on Remifentanil-Induced Hyperalgesia NCT03066739 | University of California, Irvine | Phase 2 |
| Recruiting | Electroacupuncture Pain Treatment, Mechanical Hyperalgesia, Quality of Life & Expression of Mu+ B Cells in Fib NCT05357157 | University of Crete | — |
| Unknown | Safety and Efficacy Evaluation of S (+) - Ketamine in Children NCT04834427 | Chinese PLA General Hospital | Phase 4 |
| Suspended | Impact of Repeatedly-Administered THC-cannabis on Experimental Pain and Abuse Liability in Humans NCT04596644 | New York State Psychiatric Institute | Phase 2 |
| Completed | Repeated Cannabis Administration on Experimental Pain and Abuse Liability NCT04576507 | New York State Psychiatric Institute | Phase 2 |
| Completed | Evaluation of a Patient-Centred, Multidisciplinary Opioid Tapering Program for Individuals With Chronic Non-Ca NCT04902547 | University of Manitoba | N/A |
| Completed | Reducing Nocebo Effects on Pressure Pain NCT05284383 | Leiden University | N/A |
| Completed | ERECTOR SPINE PLANE BLOCK VERSUS LOCAL INFILTRATION ANAESTHESIA FOR TRANSFORAMINAL PERCUTANEOUS ENDOSCOPIC DIS NCT05483647 | Lviv National Medical University | N/A |
| Unknown | Bilateral Bi-level Erector Spine Plane Block as a Component of General Anesthesia in Surgical Correction of Sp NCT04697498 | Lviv National Medical University | N/A |
| Completed | Pain Response to Cannabidiol in Opioid-induced Hyperalgesia, Acute Nociceptive Pain and Allodynia By Using a M NCT04059978 | University Hospital, Basel, Switzerland | N/A |
| Unknown | Central Sensitisation and Postoperative Pain NCT04220697 | Université Catholique de Louvain | N/A |
| Completed | Electrophysiological Correlates of Nocebo Effects on Pain NCT04199858 | Leiden University Medical Center | N/A |
| Completed | Pain-related Fear as a Facilitator of Nocebo Hyperalgesia NCT04197154 | Leiden University Medical Center | N/A |
| Completed | Pain Response to Cannabidiol in Induced Acute Nociceptive Pain, Allodynia and Hyperalgesia By Using a Model Mi NCT03985995 | University Hospital, Basel, Switzerland | N/A |
| Unknown | Exercise-induced Ischemia and the Influence of Pain Modulation in a Nerve Growth Factor (NGF) Model NCT03844243 | Aalborg University | EARLY_Phase 1 |
| Completed | Gabapentin Pretreatment for Staged Bilateral Cataract Operations NCT03826615 | Seoul National University Hospital | N/A |
| Completed | The Role of Learning in Nocebo Hyperalgesia NCT03793790 | Leiden University Medical Center | N/A |
| Withdrawn | Pilot Study to Compare Topical Voriconazole to Placebo as a Pain Reducing Agent NCT02689713 | Kenneth Hargreaves | Phase 2 |
| Completed | Hyperalgesia, Persistent Pain, and Fentanyl Dosing in On-Pump Coronary Artery Bypass Grafting NCT03450161 | University Hospital, Ghent | Phase 4 |
| Completed | Drip-infusion of Remifentanil for RIH NCT04387097 | Tri-Service General Hospital | — |
| Completed | Interaction Between NGF and Acute Exercise-induced Ischemia NCT03470038 | Aalborg University | EARLY_Phase 1 |
| Completed | Cortical Neuroplasticity by Muscle Pain of Pain-induced Plasticity NCT03354624 | Aalborg University | N/A |
| Completed | Effect of High-dose Naloxone Following Third Molar Extraction NCT02976337 | mads u werner | Phase 2 |
| Unknown | Prevention of Hyperalgesia With Epidural Morphine NCT03225690 | Cukurova University | Phase 4 |
| Completed | Spread of Muscle Hyperalgesia and Pain in a Low Dose NGF-induced Pain Model NCT03217942 | Aalborg University | EARLY_Phase 1 |
| Unknown | The Relationship Between Saliva β-endorphins Levels, Cold Pressor Test and Perception of Pain in Oral Surgery NCT03164161 | Lithuanian University of Health Sciences | N/A |
| Completed | Administration of Acetazolamide to Prevent Remifentanil Induced Hyperalgesia NCT02992938 | University of Chile | Phase 4 |
| Completed | DNA Methylation and Perioperative Pain Treatment NCT02938455 | University of Bologna | — |
| Unknown | Opioid Induced Hyperalgesia (OIH) Modulation With Propranolol NCT02934763 | Pontificia Universidad Catolica de Chile | Phase 4 |
| Completed | Effect of High-dose Naloxone Infusion on Pain and Hyperalgesia in Patients Following Groin-Hernia Repair. NCT01992146 | Rigshospitalet, Denmark | Phase 2 |
| Completed | Dextromethorphan Effect on Central Sensitization to Pain in Healthy Volunteers NCT02596360 | University Hospital, Clermont-Ferrand | Phase 1 |
| Completed | Preoperative Intraarticular Injection of Methylprednisolone in Patients Scheduled for Total Knee-arthroplasty NCT02253966 | Rigshospitalet, Denmark | Phase 2 |
| Completed | L-menthol as a Topical Counter-irritant to TRPA1-induced Neurogenic Inflammation and Pain NCT02653703 | Aalborg University | N/A |
| Completed | Prevention of Remifentanil-induced Postoperative Hyperalgesia With Intravenous Ibuprofen NCT02243254 | Seoul National University Hospital | N/A |
| Unknown | Effect of Gabapentin on Pain of the Second Cataract Surgery NCT02127853 | Seoul National University Hospital | Phase 4 |
| Completed | Fenobam on Heat/Capsaicin Induced Hyperalgesia in Healthy Volunteers NCT01981395 | Laura Cavallone | Phase 1 |
| Completed | Analgesic Effect of Oxytocin Receptor Modulation NCT01918475 | Insel Gruppe AG, University Hospital Bern | N/A |
| Completed | Effect of High Dose Naloxone on Secondary Hyperalgesia NCT01935206 | Rigshospitalet, Denmark | Phase 1 |
| Completed | Hypoalgesic Effects Neural Mobilization Techniques NCT02011477 | Josue Fernandez Carnero | EARLY_Phase 1 |
| Terminated | Evaluation of the Antihyperalgesic Effect of Tapentadol in Two Human Experimental Models NCT01615510 | University Hospital Schleswig-Holstein | Phase 1 |
| Completed | Opioid-induced Hyperalgesia After Remifentanil Infusion NCT01702389 | Oslo University Hospital | Phase 4 |
| Completed | IV Acetaminophen as an Adjunct Analgesic in Cardiac Surgery NCT01544062 | University of Washington | Phase 4 |
| Completed | Hyperbaric Oxygen Therapy Attenuates Central Sensitization Induced by a Thermal Injury in Human Volunteers (HB NCT02025686 | Per Rotbøll Nielsen | N/A |
| Completed | Hyperalgesia and Pain NCT01581450 | Air Liquide Santé International | Phase 1 |
| Completed | Preventing Pain After Heart Surgery NCT01480765 | Barts & The London NHS Trust | Phase 4 |
| Completed | Evaluation of the Effect of Ketamine on Remifentanil-induced Hyperalgesia NCT01301079 | Federal University of São Paulo | Phase 3 |
| Unknown | Effect of Propofol on Remifentanil-induced Postoperative Hyperalgesia in Patients Undergoing Thyroid Surgery NCT01189721 | Gangnam Severance Hospital | Phase 4 |
| Completed | Perioperative Opioid-induced Hyperalgesia and Its Prevention With Ketamine and Methadone NCT01594047 | Fondazione IRCCS Istituto Nazionale dei Tumori, Milano | N/A |
| Completed | Effect of Intraoperative Magnesium on Remifentanil-induced Postoperative Hyperalgesia After Thyroidectomy NCT01025245 | Yonsei University | Phase 4 |
| Unknown | The Effect of High-dose Remifentanil on Established Sunburn-induced Hyperalgesia in Human Volunteers (HighDose NCT01015482 | Medical University of Vienna | Phase 4 |
| Unknown | The Effect of High-dose Remifentanil on Established Capsaicin-induced Hyperalgesia in Human Volunteers NCT00886106 | Medical University of Vienna | Phase 4 |
| Terminated | Local Anesthetic Infusion and Sternotomy NCT00802048 | University Hospital, Bordeaux | Phase 3 |
| Completed | Study on the Development of Opioid Induced Hyperalgesia (OIH) After Exposure to Alfentanil NCT00991809 | Johns Hopkins University | N/A |
| Completed | Study on the Effect of a Beta Blocker on Increased Sensitivity to Pain in Humans Caused by Opioids NCT01222091 | Stanford University | Phase 2 |
| Completed | Local Anesthetic Infiltration to Prevent Postoperative Pain After Lumbar Surgery NCT00825422 | University Hospital, Bordeaux | Phase 3 |
| Unknown | The Effect of Remifentanil on Established Sunburn-induced Hyperalgesia in Human Volunteers NCT00811837 | Medical University of Vienna | Phase 4 |
| Unknown | The Effect of Remifentanil on Established Capsaicin-Induced Hyperalgesia in Human Volunteers NCT00789386 | Medical University of Vienna | Phase 4 |
| Completed | Effect of Ketamine on Opioid-Induced Hyperalgesia NCT00833755 | Massachusetts General Hospital | N/A |
| Completed | Pain Medicine for Wound Care Procedures NCT00701909 | University of California, San Francisco | Phase 3 |
| Completed | A Safety Tolerance and Experimental Hyperalgesia Study of Oral NGX426 in Healthy Male Voluneteers NCT00832546 | TorreyPines Therapeutics | Phase 1 |
| Completed | Effects of Nefopam on Hyperalgesia After Cardiac Surgery NCT00413257 | University Hospital, Bordeaux | Phase 2 / Phase 3 |
| Completed | A Study Of GSK189254 And Duloxetine In The Electrical Hyperalgesia Model Of Healthy Volunteers NCT00387413 | GlaxoSmithKline | Phase 1 |
| Completed | Dextromethorphan, Gabapentin, and Oxycodone to Treat Opioid-Induced Hyperalgesia NCT00218374 | National Institute on Drug Abuse (NIDA) | N/A |
| Completed | Effects of Lidocaine Patch on Intradermal Capsaicin Induced Pain and Hyperalgesia NCT00373893 | University of California, San Diego | Phase 1 |
| Completed | Effect of Valdecoxib Pretreatment on Pain and Secondary Hyperalgesia in Healthy Volunteers NCT00260325 | Penn State University | Phase 4 |
| Unknown | Effects of N-Methyl-D-Aspartate (NMDA)-Receptor Antagonism on Hyperalgesia, Opioid Use, and Pain After Radical NCT00188383 | University Health Network, Toronto | Phase 1 / Phase 2 |
| Completed | GW406381 In Patients With Peripheral Nerve Injury NCT00279032 | GlaxoSmithKline | Phase 1 |
| Completed | Analgesic Efficacy of Smoked Cannabis NCT00241579 | Center for Medicinal Cannabis Research | Phase 1 / Phase 2 |
| Completed | Influence of Genetics in Pain Sensitivity NCT00001956 | National Institute of Dental and Craniofacial Research (NIDCR) | Phase 2 |
| Completed | Positron Emission Tomography to Measure Pain and Pain Control NCT00001307 | National Institute of Dental and Craniofacial Research (NIDCR) | — |