{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pain+ratings&page=2",
    "query": {
      "intervention": "Pain ratings",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 37,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pain+ratings&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Pain+ratings&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T18:49:33.977Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT00760474",
      "title": "An fMRI Study Of Brain Response In Patients With Fibromyalgia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Fibromyalgia"
      ],
      "interventions": [
        {
          "name": "Pregabalin, then placebo",
          "type": "DRUG"
        },
        {
          "name": "Placebo, then pregabalin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer's Upjohn has merged with Mylan to form Viatris Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 70 Years · Female only"
      },
      "enrollment_count": 27,
      "start_date": "2009-01",
      "completion_date": "2011-03",
      "has_results": true,
      "last_update_posted_date": "2021-01-22",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 2,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00760474"
    },
    {
      "nct_id": "NCT05759013",
      "title": "Pivotal Evaluation of Abdominal Neuromuscular Electrical Stimulation (VentFree) for Weaning From Mechanical Ventilation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Respiration, Artificial",
        "Ventilators, Mechanical"
      ],
      "interventions": [
        {
          "name": "Breath synchronized abdominal FES",
          "type": "DEVICE"
        },
        {
          "name": "Sham breath synchronized abdominal FES",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Liberate Medical",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "22 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "22 Years and older"
      },
      "enrollment_count": 250,
      "start_date": "2024-02-15",
      "completion_date": "2026-05-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-02",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 15,
      "location_summary": "Long Beach, California • Jacksonville, Florida • Hines, Illinois + 9 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Hines",
          "state": "Illinois"
        },
        {
          "city": "Maywood",
          "state": "Illinois"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05759013"
    },
    {
      "nct_id": "NCT06245655",
      "title": "Transcutaneous Electrical Nerve Stimulation (TENS) for IUD Insertion Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Transcutaneous Electrical Nerve Stimulation (TENS)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 99,
      "start_date": "2024-03-25",
      "completion_date": "2025-04-21",
      "has_results": true,
      "last_update_posted_date": "2026-07-06",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 5,
      "location_summary": "New Haven, Connecticut • New York, New York",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06245655"
    },
    {
      "nct_id": "NCT00823147",
      "title": "Pain Catastrophizing as a Cause for Systemic Inflammation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Musculoskeletal Pain"
      ],
      "interventions": [
        {
          "name": "Pain Catastrophizing Induction",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Beth Darnall, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 70 Years · Female only"
      },
      "enrollment_count": 93,
      "start_date": "2009-01",
      "completion_date": "2014-09",
      "has_results": false,
      "last_update_posted_date": "2019-08-06",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00823147"
    },
    {
      "nct_id": "NCT03215940",
      "title": "Treatment of Chronic Pain With Cannabidiol (CBD) and Delta-9-tetrahydrocannabinol (THC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Chronic Pain, Widespread"
      ],
      "interventions": [
        {
          "name": "Delta-9-Tetrahydrocannabinol",
          "type": "DRUG"
        },
        {
          "name": "Cannabidiol",
          "type": "DRUG"
        },
        {
          "name": "Placebos",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 53,
      "start_date": "2018-02-01",
      "completion_date": "2024-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-04-13",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03215940"
    },
    {
      "nct_id": "NCT00001956",
      "title": "Influence of Genetics in Pain Sensitivity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Healthy",
        "Hyperalgesia",
        "Pain"
      ],
      "interventions": [
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "Oral surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Tissue biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "National Institute of Dental and Craniofacial Research (NIDCR)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 800,
      "start_date": "2000-01",
      "completion_date": "2005-02",
      "has_results": false,
      "last_update_posted_date": "2006-06-30",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001956"
    },
    {
      "nct_id": "NCT07217782",
      "title": "Pain in Juvenile Arthritis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Juvenile Idiopathic Arthritis"
      ],
      "interventions": [
        {
          "name": "Pressure pain thresholds (measured in kilopascal)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Cold pain tolerance (duration in seconds)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "9 Years to 17 Years"
      },
      "enrollment_count": 140,
      "start_date": "2025-09-15",
      "completion_date": "2035-09",
      "has_results": false,
      "last_update_posted_date": "2026-07-14",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07217782"
    },
    {
      "nct_id": "NCT03778177",
      "title": "Neurophysiologic Signatures of Trigeminal Neuralgia Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Trigeminal Neuralgia (TN)"
      ],
      "interventions": [
        {
          "name": "transcranial electrical brain stimulation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 61,
      "start_date": "2019-02-01",
      "completion_date": "2022-05-12",
      "has_results": false,
      "last_update_posted_date": "2022-10-06",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03778177"
    },
    {
      "nct_id": "NCT04125862",
      "title": "Pain in Fibrous Dysplasia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fibrous Dysplasia/McCune-Albright Syndrome"
      ],
      "interventions": [
        {
          "name": "MRI-based Neuroimaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Non-contrast MRI",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "18F-FDG-PET/CT",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "18F-NaF-PET/CT",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Boston Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "10 Years to 45 Years"
      },
      "enrollment_count": 37,
      "start_date": "2021-01-05",
      "completion_date": "2025-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-12-11",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04125862"
    },
    {
      "nct_id": "NCT05280522",
      "title": "Pain Inhibition With Neuromuscular Electrical Stimulation",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Participants"
      ],
      "interventions": [
        {
          "name": "Volitional Contractions (VOL)",
          "type": "OTHER"
        },
        {
          "name": "Neuromuscular Electrical Stimulation (NMES)",
          "type": "DEVICE"
        },
        {
          "name": "Noxious Electrical Stimulation (NXES)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DEVICE"
      ],
      "sponsor": "University of New England",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 20,
      "start_date": "2018-10-19",
      "completion_date": "2019-05-28",
      "has_results": false,
      "last_update_posted_date": "2022-03-15",
      "last_synced_at": "2026-10-02T18:49:33.977Z",
      "location_count": 1,
      "location_summary": "Portland, Maine",
      "locations": [
        {
          "city": "Portland",
          "state": "Maine"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05280522"
    }
  ]
}