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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Systemic Exertion Intolerance Disease Clear all
Active, not recruiting Not applicable Interventional

Does a Technology Enabled Multi-disciplinary Team-based Care Model for the Management of Long COVID and Other Fatiguing Illnesses Improve Clinical Care of Patients and Represent a Sustainable Approach Within a Federally Qualified Health Center?

NCT05167227
View directory record Official record
Conditions
SARS-CoV-2 Acute Respiratory Disease, Myalgic Encephalomyelitis, Chronic Fatigue Syndrome, Post-acute Sequelae of SARS-COV-2 Infection, Post COVID-19 Condition
Interventions
Extension for Community Healthcare Outcomes
Other
Lead sponsor
Family Health Centers of San Diego
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Jul 22, 2026, 2:58 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Whole Body Hyperthermia Registry Study

NCT02174003
View directory record Official record
Conditions
Depression, Anxiety, PTSD, Fibromyalgia, Chronic Fatigue Syndrome
Interventions
High intensity whole-body infrared heating
Device
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Jul 22, 2026, 2:58 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Assessment of Neuroinflammation in Central Inflammatory Disorders Using [F-18]DPA-714.

NCT03759522
View directory record Official record
Conditions
Fibromyalgia, Chronic Fatigue Syndrome, Multiple Sclerosis, Healthy
Interventions
DPA-714 PET/MRI
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Phase 2 Interventional

Study to Evaluate the Benefit of RUCONEST in Improving Neurological Symptoms in Post COVID-19 Infection

NCT04705831
View directory record Official record
Conditions
Post-Viral Fatigue Syndrome, Post-Viral Disorder (Disorder), Covid19
Interventions
Ruconest
Drug
Lead sponsor
IMMUNOe Research Centers
Industry
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Centennial, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 10, 2025 · Synced Jul 22, 2026, 2:58 PM EDT
Not listed No phase listed Observational

ME/CFS: Activity Patterns and Autonomic Dysfunction

NCT02948556
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Not listed
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Jul 22, 2026, 2:58 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Epstein-Barr Virus as a Possible Cause for Chronic Fatigue Syndrome

NCT00433355
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Not listed
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Mar 18, 2009 · Synced Jul 22, 2026, 2:58 PM EDT
Terminated Phase 4 Interventional Results available

Use of Xyrem to Improve Sleep in Chronic Fatigue Syndrome

NCT00498485
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Placebo, Sodium Oxybate
Drug
Lead sponsor
University of Medicine and Dentistry of New Jersey
Other
Eligibility
21 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated May 18, 2016 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Phase 2 Interventional Results available

The Exercise Response to Pharmacologic Cholinergic Stimulation in Myalgic Encephalomyelitis / Chronic Fatigue Syndrome

NCT03674541
View directory record Official record
Conditions
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Exercise Intolerance, Dysautonomia, Low Ventricular Filling Pressures (Preload Failure), Postural Orthostatic Tachycardia Syndrome, Orthostatic Hypotension, Fibromyalgia
Interventions
Pyridostigmine Bromide, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Jul 22, 2026, 2:58 PM EDT
Withdrawn Not applicable Interventional

Immune Effects of Low-dose Naltrexone in ME/CFS

NCT02965768
View directory record Official record
Conditions
Fatigue Syndrome, Chronic
Interventions
Naltrexone HCl
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 65 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 1, 2022 · Synced Jul 22, 2026, 2:58 PM EDT
Terminated Phase 2 Interventional Results available

Study To Assess The Clinical Benefit Of Droxidopa In Subjects With Chronic Fatigue Syndrome

NCT00977171
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Orthostatic Hypotension, Neurally Mediated Hypotension, Neurogenic Orthostatic Hypotension
Interventions
Droxidopa
Drug
Lead sponsor
Chelsea Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 8, 2014 · Synced Jul 22, 2026, 2:58 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study of the Hypothalmic-Pituitary-Adrenal (HPA) Axis and Its Role in Major Depression

NCT00001479
View directory record Official record
Conditions
Fatigue Syndrome, Chronic, Healthy, Mood Disorders
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiovascular Analysis of PEM

NCT04740736
View directory record Official record
Conditions
Myalgic Encephalomyelitis, Chronic Fatigue Syndrome
Interventions
Saline Infusion
Procedure
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
25 Years to 60 Years
Enrollment
106 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Not applicable Interventional Results available

Vagus Nerve Stimulation as Treatment for Long Covid

NCT05608629
View directory record Official record
Conditions
Long COVID, Chronic Fatigue Syndrome
Interventions
Transcutaneous Non-Invasive Vagus Nerve Stimulation
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
Up to 70 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 7, 2024 · Synced Jul 22, 2026, 2:58 PM EDT
Withdrawn No phase listed Observational

Therapy for Chronic Fatigue Syndrome: A Presumptive Mitochondrial Disorder

NCT01872351
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Nutraceuticals
Drug
Lead sponsor
Columbia University
Other
Eligibility
20 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 13, 2016 · Synced Jul 22, 2026, 2:58 PM EDT
Recruiting Phase 1Phase 2 Interventional

Lumbrokinase for Adults With Long Covid, Post-treatment Lyme Disease Syndrome, and Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

NCT06511050
View directory record Official record
Conditions
Long Covid, Post-treatment Lyme Disease Syndrome, Chronic Fatigue Syndrome, Myalgic Encephalomyelitis
Interventions
Lumbrokinase
Dietary Supplement
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
120 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 Mar 12, 2026 · Synced Jul 22, 2026, 2:58 PM EDT
Enrolling by invitation No phase listed Observational

Low Dose Rapamycin in ME/CFS, Long-COVID, and Other Infection Associated Chronic Conditions

NCT06257420
View directory record Official record
Conditions
Myalgic Encephalomyelitis, Long-COVID
Interventions
Rapamycin
Drug
Lead sponsor
Simmaron Research Inc.
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
5
States / cities
Palo Alto, California • Rochester, Minnesota • Incline Village, Nevada + 2 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Jul 22, 2026, 2:58 PM EDT
Recruiting Not applicable Interventional

Hydrogen Water Intervention With Heart Rate Variability as an Outcome Biomarker in ME/CFS

NCT07009691
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Hydrogen water which is prepared from an OTC supplement.
Dietary Supplement
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated Jun 7, 2025 · Synced Jul 22, 2026, 2:58 PM EDT
Suspended No phase listed Observational Accepts healthy volunteers

A Non-Interventional Pilot Study to Explore the Role of Gut Flora in Disease

NCT04031469
View directory record Official record
Conditions
Gut Microbiome, Gastrointestinal Microbiome, Autism, Autism Spectrum Disorder, Autism Spectrum Disorder High-Functioning, Alzheimer Disease, Alzheimer Dementia (AD), Alzheimer Dementia, Alzheimer Disease (AD), Crohn, Crohn Colitis, Crohn Disease (CD), Crohn Disease Colon, Myalgic Encephalomyelitis, ME/CFS, Myalgic Encephalomyelitis (ME), Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Psoriasis, Psoriasis Annularis, Psoriasis Chronic, Chronic Urinary Tract Infection, Ulcerative Colitis (Disorder), Ulcerative Colitis (UC), Ulcerative Colitis Acute, Ulcerative Colitis Chronic, Multiple Sclerosis, Multiple Sclerosis (MS) - Relapsing-remitting, Multiple Sclerosis (MS) Primary Progressive, Constipation Chronic Idiopathic, Constipation, Celiac, Celiac Disease, Celiac Sprue, Lyme Arthritis, Lyme Borreliosis, Nervous System, Lyme Disease, Chronic, Cholesterol, Cholesterol Level, High, Cancer, Colon Cancer, Amyotrophic Lateral Sclerosis (ALS), Amyotrophic Lateral Sclerosis, Rheumatoid Arthritis (RA), Rheumatoid Arthritis - Rheumatism, Chronic Fatigue Syndrome (CFS), PARKINSON DISEASE (Disorder), Parkinson Disease, Parkinson Disease (PD), Depression, Major Depressive Disorder (MDD), Depression Disorder, Depression in Adults, Anxiety, Anxiety Disorder Generalized, Obsessive Compulsive Disorder (OCD), Obsessive Compulsive Disorder OCD, Obsessive - Compulsive Disorder, Bipolar, Bipolar 1 Disorder, Bipolar Disorder (BD), Bipolar Disorder I and II, Bipolar and Related Disorders, Migraine, Migraine Disorder, Diabetes (DM), Diabetes, Lupus, Lupus Erythematosus, Epidermolysis Bullosa (EB), Mesothelioma, Mesothelioma Malignant, IBS (Irritable Bowel Syndrome), Irritable Bowel, IBS - Irritable Bowel Syndrome, Irritable Bowel Syndrome (IBS), Eczema, Eczema Atopic Dermatitis, Acne, Myasthaenia Gravis, Gout
Interventions
There is no intervention in this study
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
12 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Jul 22, 2026, 2:58 PM EDT
Recruiting No phase listed Observational

A Study Of Remote Voice Analysis Tool For Diagnosing And Monitoring ME/CFS

NCT07551999
View directory record Official record
Conditions
Encephalomyelitis, Chronic Fatigue Syndrome
Interventions
Voice Recording
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Not applicable Interventional

Treatment of Fibromyalgia With Recovery Factors

NCT04381780
View directory record Official record
Conditions
Fibromyalgia, Chronic Fatigue Syndrome
Interventions
Recovery Factors
Dietary Supplement
Lead sponsor
Practitioners Alliance Network
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Kailua, Hawaii
Source: ClinicalTrials.gov public record
Updated Oct 10, 2021 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analysis of Post-exertional Malaise Using a Two-day CPET in People With ME/CFS

NCT04026425
View directory record Official record
Conditions
Myalgic Encephalomyelitis, Chronic Fatigue Syndrome
Interventions
Two-day cardiopulmonary exercise test
Other
Lead sponsor
Ithaca College
Other
Eligibility
18 Years to 70 Years
Enrollment
173 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
3
States / cities
Torrance, California • Ithaca, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 6, 2023 · Synced Jul 22, 2026, 2:58 PM EDT
Suspended Phase 1 Interventional Accepts healthy volunteers

Tracking Peripheral Immune Cell Infiltration of the Brain in Central Inflammatory Disorders Using [Zr-89]Oxinate-4-labeled Leukocytes.

NCT03807973
View directory record Official record
Conditions
Fibromyalgia, Chronic Fatigue Syndrome, Multiple Sclerosis, Healthy
Interventions
[Zr-89]Oxine-labeled leukocytes PET/MRI
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Not applicable Interventional Results available

Patient-Partner Stress Management Effects on Chronic Fatigue Syndrome Symptoms and Neuroimmune Process

NCT01650636
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Patient-Partner Videotelephone-delivered Health Information (PP-T-HI), Patient-Partner Videotelephone-delivered Cognitive Behavioral Stress Management intervention (PP-T-CBSM)
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
21 Years to 75 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated Dec 9, 2018 · Synced Jul 22, 2026, 2:58 PM EDT
Completed Not applicable Interventional

Traditional African Healing Ceremony in a U.S. Population

NCT01873482
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Anxiety, Depression, Cancer
Interventions
Movement to rhythm
Behavioral
Lead sponsor
Duke University
Other
Eligibility
25 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 2, 2014 · Synced Jul 22, 2026, 2:58 PM EDT