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Showing 1–23 of 23 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Dysautonomia Orthostatic Hypotension Syndrome Clear all
Completed Phase 1 Interventional

Dual Sympathetic Blocks for Patients Experiencing Sympathetically-Mediated Symptoms From Long COVID

NCT05638620
View directory record Official record
Conditions
Post Acute COVID-19 Syndrome, Long COVID, Long Covid19, COVID-19 Recurrent, Post-Acute COVID-19, Post-Acute COVID-19 Infection, SARS-CoV2 Infection, Post Acute Sequelae of COVID-19, Dysautonomia, Dysautonomia Like Disorder, Dysautonomia Orthostatic Hypotension Syndrome, Post COVID-19 Condition, Post-COVID Syndrome, Post COVID-19 Condition, Unspecified, Post-COVID-19 Syndrome
Interventions
stellate ganglion block with 0.5% bupivacaine
Drug
Lead sponsor
Jonathann Kuo, MD
Other
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2025 · Synced Jul 23, 2026, 2:21 PM EDT
Enrolling by invitation No phase listed Observational

Clinico-Pathologic-Genetic-Imaging Study of Neurodegenerative and Related Disorders

NCT04680130
View directory record Official record
Conditions
PSP, CBD, PCA, LPA, Semantic Dementia, Semantic Aphasia, Behavioral Variant of Frontotemporal Dementia, FTD, PPA, Apraxia of Speech, MSA - Multiple System Atrophy, Parkinson Disease
Interventions
C-11 PiB, AV1451 Tau, C-11 ER176
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2050
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Jul 23, 2026, 2:21 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 23, 2026, 2:21 PM EDT
Recruiting Phase 1Phase 2 Interventional

NORTHERA (DROXIDOPA) for Dysautonomia in Pediatric Survivors of Menkes Disease

NCT07398508
View directory record Official record
Conditions
Menkes Disease
Interventions
Droxidopa Oral Product, Placebo Control
Drug · Other
Lead sponsor
Stephen G. Kaler
Other
Eligibility
7 Years to 17 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting Not applicable Interventional

Neurologic Stem Cell Treatment Study

NCT02795052
View directory record Official record
Conditions
Neurologic Disorders, Nervous System Diseases, Neurodegenerative Diseases, Neurological Disorders, Stroke, Traumatic Brain Injury, Cadasil, Chronic Traumatic Encephalopathy, Cerebral Infarction, Cerebral Ischemia, Cerebral Stroke, Cerebral Hemorrhage, Parkinson, Multi-System Degeneration, MSA - Multiple System Atrophy, Progressive Supranuclear Palsy, ALS, Amyotrophic Lateral Sclerosis, Neuropathy, Diabetic Neuropathies, Alzheimer Disease, Dementia, Frontotemporal Dementia, Lewy Body Disease, Cognitive Impairment, Lewy Body Variant of Alzheimer Disease
Interventions
Intravenous and Intranasal BMSC
Procedure
Lead sponsor
MD Stem Cells
Industry
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2028
U.S. locations
2
States / cities
Westport, Connecticut • Coral Springs, Florida
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Completed No phase listed Observational

PET Imaging Study of Neurochemical and Autonomic Disorders in Multiple System Atrophy (MSA)

NCT02035761
View directory record Official record
Conditions
Multiple System Atrophy - Parkinsonian Subtype (MSA-P), Multiple System Atrophy - Cerebellar Subtype (MSA-C)
Interventions
Not listed
Lead sponsor
University of Michigan
Other
Eligibility
30 Years to 80 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 4, 2018 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting No phase listed Observational

Modifiable Variables in Parkinsonism (MVP)

NCT02194816
View directory record Official record
Conditions
Parkinson's Disease, Parkinsonism, MSA - Multiple System Atrophy, Progressive Supranuclear Palsy, Shy-Drager Syndrome, Corticobasal Degeneration, Dementia With Lewy Bodies, Pick Disease, Olivopontocerebellar Atrophies
Interventions
Not listed
Lead sponsor
Bastyr University
Other
Eligibility
19 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2030
U.S. locations
1
States / cities
Kenmore, Washington
Source: ClinicalTrials.gov public record
Updated Mar 24, 2022 · Synced Jul 23, 2026, 2:21 PM EDT
Not yet recruiting No phase listed Observational

Remote Monitoring in Progressive Supranuclear Palsy (PSP)

NCT04753320
View directory record Official record
Conditions
Progressive Supranuclear Palsy, Parkinson Disease, MSA - Multiple System Atrophy
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 89 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Baltimore, Maryland • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The CurePSP Genetics Program

NCT06647641
View directory record Official record
Conditions
PSP, PSP - Progressive Supranuclear Palsy, Corticobasal Syndrome, Corticobasal Syndrome(CBS), Corticobasal Degeneration Syndrome, Corticobasal Degeneration, Corticobasal Degeneration (CBD), Corticobasal Syndrome (CBS), MSA, MSA - Multiple System Atrophy, MSA-C, Multiple System Atrophy, Multiple System Atrophy (MSA) With Orthostatic Hypotension, Multiple System Atrophy - Cerebellar Subtype (MSA-C), Multiple System Atrophy - Parkinsonian Subtype (MSA-P), Multiple System Atrophy, Cerebellar Type, Multiple System Atrophy, Parkinsonian Type, Progressive Supranuclear Palsy, Progressive Supranuclear Palsy(PSP), Progressive Supranuclear Palsy (PSP)
Interventions
Whole genome sequencing will be performed at the NIH
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
35 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2030
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Autonomic Nervous System and Obesity

NCT00179023
View directory record Official record
Conditions
OBESITY, HYPERTENSION, PURE AUTONOMIC FAILURE, SHY-DRAGER SYNDROME
Interventions
Trimethaphan, Pseudoephedrine
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 28, 2018 · Synced Jul 23, 2026, 2:21 PM EDT
Active, not recruiting Phase 3 Interventional

Phase 3 Efficacy and Durability of Ampreloxetine for the Treatment of Symptomatic nOH in Participants With Multiple System Atrophy

NCT05696717
View directory record Official record
Conditions
Symptomatic Neurogenic Orthostatic Hypotension, MSA - Multiple System Atrophy
Interventions
Ampreloxetine, Placebo
Drug
Lead sponsor
Theravance Biopharma
Industry
Eligibility
30 Years and older
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
26
States / cities
Scottsdale, Arizona • Fountain Valley, California • La Jolla, California + 21 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Jul 23, 2026, 2:21 PM EDT
Not listed No phase listed Observational

Longitudinal Tracking of Patients Diagnosed With Neurodegenerative Movement Disorders

NCT05486806
View directory record Official record
Conditions
Neurodegenerative Diseases, sca3, MSA - Multiple System Atrophy, Ataxia, Synucleinopathies
Interventions
18F-PBR06, 18F-PBR06
Drug · Radiation
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
50 participants
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 21, 2023 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Sodium's Effect on Urinary Sodium and Dopamine Excretion in Patients With Postural Tachycardia Syndrome

NCT01563107
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Plasma Volume, Exercise Capacity Test - Bicycle, Posture Study
Radiation · Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 24, 2022 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting Not applicable Interventional

The STAND-UP Study

NCT07195903
View directory record Official record
Conditions
Orthostatic Hypotension, Dysautonomic, Orthostatic Intolerance
Interventions
Angioplasty or stenting
Device
Lead sponsor
St. Francis Hospital, New York
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Roslyn, New York
Source: ClinicalTrials.gov public record
Updated Sep 28, 2025 · Synced Jul 23, 2026, 2:21 PM EDT
Terminated Early Phase 1 Interventional

Water and Sudafed in Autonomic Failure

NCT02149901
View directory record Official record
Conditions
Shy-Drager Syndrome, Multiple System Atrophy
Interventions
Pseudoephedrine + 480 ml water, Pseudoephedrine + 50 ml water, Placebo + 480 ml water (optional), Placebo + 50 ml water (optional)
Drug · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 4, 2021 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Not applicable Interventional

Droxidopa in Treating Patients With Neurogenic Hypotension

NCT00004478
View directory record Official record
Conditions
Shy-Drager Syndrome, Orthostatic Hypotension
Interventions
droxidopa
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
20 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 17, 2008 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Advancing Understanding of Transportation Options

NCT04141891
View directory record Official record
Conditions
Diabetic Retinopathy, Macular Degeneration, Glaucoma, Retinitis Pigmentosa, Vision Disorders, Acute Coronary Syndrome, Implantable Defibrillator User, Congestive Heart Failure, Hypertrophic Obstructive Cardiomyopathy, Orthostatic Hypotension, Syncope, Presyncope, Narcolepsy, Dementia, Multiple Sclerosis, Parkinson Disease, Brain Injuries, Spinal Cord Injuries, Stroke, Vertigo, Dizziness, Seizures, Substance Use, Insulin Dependent Diabetes Mellitus, Arthritis, Foot--Abnormalities, Chronic Obstructive Pulmonary Disease, Obstructive Sleep Apnea, End Stage Renal Disease, Sleep Apnea, Insomnia, Restless Legs Syndrome
Interventions
Driving Decision Aid, Older Drivers Website
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
529 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
3
States / cities
La Jolla, California • Aurora, Colorado • Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 20, 2025 · Synced Jul 23, 2026, 2:21 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 23, 2026, 2:21 PM EDT
Completed Phase 1 Interventional

Treatment of Supine Hypertension in Autonomic Failure

NCT00223717
View directory record Official record
Conditions
Hypertension
Interventions
Clonidine, Nitroglycerin transdermal, Dipyridamole/ Aspirin (Aggrenox), Desmopressin (DDAVP), Sildenafil, Nifedipine, Hydralazine, Hydrochlorothiazide, Placebo, Bosentan, Diltiazem, Eplerenone, guanfacine, L-arginine, captopril, carbidopa, losartan, metoprolol tartrate, nebivolol hydrochloride, prazosin hydrochloride, tamsulosin hydrochloride, Head-up tilt., aliskiren, Local heat stress
Drug · Dietary Supplement · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 2 Interventional

A Biomarker Study of ATH434 in Participants With MSA

NCT05864365
View directory record Official record
Conditions
Multiple System Atrophy
Interventions
ATH434
Drug
Lead sponsor
Alterity Therapeutics
Industry
Eligibility
30 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 31, 2025 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Cardiovascular Function and Response to Stimulation Within the First Year After Spinal Cord Injury

NCT06841198
View directory record Official record
Conditions
Spinal Cord Injuries (SCI), Orthostatic Hypotension, Dysautonomic, Cardiovascular, Transcutaneous Spinal Stimulation
Interventions
spinal cord transcutaneous stimulation, Ice testing
Device · Procedure
Lead sponsor
Kessler Foundation
Other
Eligibility
18 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
West Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Terminated Early Phase 1 Interventional

Blood Pressure Lowering Effects of Angiotensin-(1-7) in Primary Autonomic Failure

NCT02591173
View directory record Official record
Conditions
Autonomic Nervous System Disorders, Pure Autonomic Failure, Shy-Drager Syndrome, Orthostatic Hypotension, Dysautonomic
Interventions
Angiotensin-(1-7), Saline
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 11, 2021 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 2 Interventional

Study of ATH434 in Participants with Multiple System Atrophy

NCT05109091
View directory record Official record
Conditions
Multiple System Atrophy
Interventions
ATH434 dose level 1, ATH434 dose level 2, Placebo
Drug
Lead sponsor
Alterity Therapeutics
Industry
Eligibility
30 Years to 75 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
6
States / cities
La Jolla, California • Chicago, Illinois • Baltimore, Maryland + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Jul 23, 2026, 2:21 PM EDT