Before medications are approved by the U.S. Food and Drug Administration (FDA) or before certain therapy methods are widely accepted as effective, they are tested on people who volunteer to participate in a clinical trial.

Organizations across the country are looking for people like you to take part in their research studies. The list of studies below have been selected from ClinicalTrials.gov based on their inclusion of one or more of the following terms: anxiety disorders, depression, OCD, PTSD, and bipolar disorder.

The Anxiety and Depression Association of America (ADAA) is supportive of research that is conducted through clinical trials. Participating in research can potentially help change the mental health outcomes for you and others who suffer anxiety, depression, and related disorders. You may learn about new interventions/treatments that are being considered.

Read this ADAA blog about things to know and questions to ask before committing to a clinical trial.

This website page is brought to you in partnership with ResearchMatch.


850 matching studies

Sponsor Condition of Interest
Pramipexole Versus Escitalopram to Treat Major Depressive Disorder (MDD) and Comorbid MDD With Mild1
National Institute of Allergy and Infectious Diseases (NIAID) Major Depressive Disorder Mild Neurocognitive Disorder HIV
A phase II, randomized, open-label, two-arm clinical trial evaluating the safety and efficacy of pramipexole extended release (ER) versus escitalopram for the treatment of major depressive disorder (MDD) and comorbid MDD with mild neurocognitive disorder (MND) in persons with HIV (PWH). Participant1 expand

A phase II, randomized, open-label, two-arm clinical trial evaluating the safety and efficacy of pramipexole extended release (ER) versus escitalopram for the treatment of major depressive disorder (MDD) and comorbid MDD with mild neurocognitive disorder (MND) in persons with HIV (PWH). Participants will be assessed comprehensively and briefly at intercurrent visits to monitor for toxicity, response to therapy, and to assess for dose changes. An optional sub-study to evaluate treatment impact on the cerebrospinal fluid (CSF) profile will be conducted in a subset of 36 participants.

Type: Interventional

Start Date: May 2026

open study

Assessing Improvements in Mood and Sleep Trial
University of Pittsburgh Depression Suicidality Sleep
This is a multi-site randomized control trial involving people age 55+ years who have current depression symptoms plus another suicide risk indicator (either current suicidal ideation or a past history of attempt). Our goal is evaluate which of two different approaches works best to improve things1 expand

This is a multi-site randomized control trial involving people age 55+ years who have current depression symptoms plus another suicide risk indicator (either current suicidal ideation or a past history of attempt). Our goal is evaluate which of two different approaches works best to improve things like trouble sleeping, bad moods, and any suicidality. Participants will complete diagnostic interviews, self-report scales, and wear an actigraphy device for the 8 weeks starting at the baseline visit.

Type: Interventional

Start Date: May 2025

open study

Modulating Exercise Dosage to Improve Concussion Recovery
University of Colorado, Denver Concussion, Brain Treatment Aerobic Exercise Inflammation Depression, Anxiety
Aerobic exercise has emerged as an effective treatment to reduce sport-related concussion symptom severity, yet existing work lacks rigor regarding the precise exercise volume and intensity required to elicit therapeutic effects, how exercise can alter concussion-related pathophysiology, and whethe1 expand

Aerobic exercise has emerged as an effective treatment to reduce sport-related concussion symptom severity, yet existing work lacks rigor regarding the precise exercise volume and intensity required to elicit therapeutic effects, how exercise can alter concussion-related pathophysiology, and whether exercise can prevent the development of secondary sequelae. Our objective is to examine if a high dose exercise program (higher volume than currently prescribed at an individualized, safe intensity level) initiated within 14 days of concussion results in faster symptom resolution, altered physiological function, or reduced secondary sequalae. Findings from this research will lead to more rigorous and precise rehabilitation guidelines and improved understanding about how exercise affects neurophysiological function among adolescents with concussion.

Type: Interventional

Start Date: Aug 2022

open study

Study to Evaluate Weight Gain as Assessed by Change in BMI Z-score in Pediatric Subjects With Schiz1
Alkermes, Inc. Schizophrenia Bipolar I Disorder
To compare changes in body mass index (BMI) Z-score following treatment with OLZ/SAM vs olanzapine expand

To compare changes in body mass index (BMI) Z-score following treatment with OLZ/SAM vs olanzapine

Type: Interventional

Start Date: Jun 2022

open study

Pharmaco-Neuroimaging Studies of Approach/Avoidance Behaviors and Post-Mortem Studies: Pharmacologi1
Mclean Hospital Depressive Disorder, Major Anxiety Disorder
The study will investigate whether a nociceptin receptor antagonist will normalize neural and behavioral processes of approach/avoidance decision-making in unmedicated individuals with major depressive disorder (MDD) and anxiety disorders. More specifically, the study aims to investigate dysregulat1 expand

The study will investigate whether a nociceptin receptor antagonist will normalize neural and behavioral processes of approach/avoidance decision-making in unmedicated individuals with major depressive disorder (MDD) and anxiety disorders. More specifically, the study aims to investigate dysregulation within (1) corticostriatal-midbrain circuitry and (2) nociceptin/orphanin FQ peptide and the nociceptin receptor (NOPR).

Type: Interventional

Start Date: Feb 2025

open study

Caregiver Stress and Sleep Study
University of Pittsburgh Depressive Symptoms Caregiver Burden
The purpose of this research study is to better understand how stress, sleep and activity might impact caregivers' mood and brain health. This study includes a randomized experimental component where therapists will systematically deliver one of two evidence-based talk-therapy treatments. The aim i1 expand

The purpose of this research study is to better understand how stress, sleep and activity might impact caregivers' mood and brain health. This study includes a randomized experimental component where therapists will systematically deliver one of two evidence-based talk-therapy treatments. The aim is to evaluate effects on meaningful health-relevant measures including morning activation levels, depression symptoms, rumination, and aspects brain connectivity previously linked with depression. Participants will complete surveys about their caregiving experiences, health, and mood, undergo an MRI, and wear an actigraphy watch that measures activity levels throughout the day and when sleeping.

Type: Interventional

Start Date: Jul 2022

open study

Buspirone and Melatonin for Depression Following Traumatic Brain Injury
Massachusetts General Hospital Depression Brain Injuries, Traumatic
Traumatic brain injuries (TBIs) are common. Post-TBI depression is associated with anxiety, aggression, fatigue, distractibility, anger, irritability, and rumination. The current research group conducted a pilot clinical trial, which investigated the novel treatment combination of buspirone and mel1 expand

Traumatic brain injuries (TBIs) are common. Post-TBI depression is associated with anxiety, aggression, fatigue, distractibility, anger, irritability, and rumination. The current research group conducted a pilot clinical trial, which investigated the novel treatment combination of buspirone and melatonin (B+MEL) in outpatients with clinical depression. Compared to placebo, B+MEL was associated with a significant improvement in depressive symptoms. Depression following TBI may be different from clinical depression. The B+MEL combination has never been studied in patients with post-TBI depression. The B+MEL has shown promise in ameliorating cognitive difficulties in people with depression. Because cognitive problems are typical in people with post-TBI depression, we plan to measure the effect of the B+MEL combination on cognitive ability in post-TBI depression. Additionally, we are interested in measuring functional magnetic resonance imaging changes before and after treatment with B+MEL in order to gain insight into the brain mechanisms of our hypothesized clinical symptom changes. The goals of the proposed pilot research project are to assess changes in symptoms in patients with post-TBI depression following Buspirone + Melatonin combination (B+MEL), and the corresponding brain mechanisms underlying these hypothesized changes by measuring: 1) depressive symptoms; 2) cognitive symptoms; 3) functional magnetic resonance imaging.

Type: Interventional

Start Date: Aug 2020

open study

Pupillometry in Identifying Risk of Postoperative Opioid-induced Respiratory Depression in Children1
NeurOptics Inc Opioid-Induced Respiratory Depression Postoperative Complications (Cardiopulmonary) Respiratory Complications Due to Anesthesia
This study will evaluate whether quantitative pupillometry measurements can be used to identify children at risk for postoperative opioid-induced respiratory depression (OIRD) following tonsillectomy. Opioid-induced respiratory depression is a serious and potentially life-threatening complication t1 expand

This study will evaluate whether quantitative pupillometry measurements can be used to identify children at risk for postoperative opioid-induced respiratory depression (OIRD) following tonsillectomy. Opioid-induced respiratory depression is a serious and potentially life-threatening complication that can occur after surgery, and current monitoring approaches are limited in their ability to predict which patients are at highest risk. In this prospective observational cohort study, approximately 300 pediatric patients undergoing tonsillectomy will undergo non-invasive pupillometry measurements at defined perioperative time points, including preoperative, intraoperative, and postoperative periods. Pupillometry measurements will be collected using a commercially available, FDA-regulated infrared pupillometer. These measurements will include pupil size, constriction and dilation velocities, and latency in response to light stimulation. Pupillometry data will be collected for research purposes only and will not be used to guide clinical care or treatment decisions. Standard clinical care will not be altered as part of this study. Clinical outcomes, including the occurrence of postoperative opioid-induced respiratory depression, opioid use, sedation levels, pain scores, and other postoperative events, will be recorded from the medical record. The goal of this study is to evaluate the relationship between pupillary response patterns and the occurrence of postoperative respiratory depression, and to support the development of predictive models that may improve early identification of patients at risk for opioid-related adverse events.

Type: Observational

Start Date: May 2026

open study

Fear and Anxiety in Anesthesia-Naïve Patients Pre-operatively vs Post-operatively
Stony Brook University Anxiety Anesthesia Awareness
The goal of this observational study is to understand how fear and anxiety felt by anesthesia-naive patients compares before versus after their scheduled surgery. Patients who are scheduled to undergo a low-risk surgery/procedure and have never had anesthesia before will be asked to: 1. Fill out1 expand

The goal of this observational study is to understand how fear and anxiety felt by anesthesia-naive patients compares before versus after their scheduled surgery. Patients who are scheduled to undergo a low-risk surgery/procedure and have never had anesthesia before will be asked to: 1. Fill out a survey before their surgery in the perioperative setting 2. Answer follow-up questions over the phone a few days after their surgery.

Type: Observational

Start Date: Feb 2026

open study

OCD LIFU Target Engagement
University of Pennsylvania Obsessive Compulsive Disorder (OCD)
The investigators will conduct a pilot study to evaluate the safety and feasibility of low-intensity focused ultrasound on obsessive-compulsive disorder (OCD) symptoms when delivered to subcortical brain targets. The investigators will use the ATTN201 device to deliver single sessions of unfocused1 expand

The investigators will conduct a pilot study to evaluate the safety and feasibility of low-intensity focused ultrasound on obsessive-compulsive disorder (OCD) symptoms when delivered to subcortical brain targets. The investigators will use the ATTN201 device to deliver single sessions of unfocused and focused ultrasound to up to three brain targets over 4 study visits and assess the intervention through self-rated scales of OCD symptoms.

Type: Interventional

Start Date: Mar 2026

open study

ALTO-207 in Adults With Treatment-resistant Depression (TRD)
Alto Neuroscience Treatment-resistant Depression (TRD)
The purpose of this trial is to measure depressive symptoms following treatment with ALTO-207 compared with placebo in participants with TRD. expand

The purpose of this trial is to measure depressive symptoms following treatment with ALTO-207 compared with placebo in participants with TRD.

Type: Interventional

Start Date: May 2026

open study

Non-invasive Vagus Nerve Stimulation (nVNS) for Post-Traumatic Stress Disorder (PTSD)
Acacia Clinics PTSD Post Traumatic Stress Disorder PTSD PTSD - Post Traumatic Stress Disorder Post Traumatic Stress Disorder Post Traumatic Stress Disorders
The goal of this clinical trial is to evaluate the safety and effectiveness of the gammaCore non-invasive vagus nerve stimulation (nVNS) device as an additional treatment for symptoms of post-traumatic stress disorder (PTSD) in adults. The vagus nerve connects the brain with many organs and system1 expand

The goal of this clinical trial is to evaluate the safety and effectiveness of the gammaCore non-invasive vagus nerve stimulation (nVNS) device as an additional treatment for symptoms of post-traumatic stress disorder (PTSD) in adults. The vagus nerve connects the brain with many organs and systems in the body and plays a role in regulating stress and emotional responses. The gammaCore device is a handheld, rechargeable medical device that delivers gentle electrical stimulation to the vagus nerve through the skin on the side of the neck. By stimulating this nerve, the device may help reduce PTSD symptoms. gammaCore is cleared by the U.S. Food and Drug Administration (FDA) for the treatment and prevention of migraine and cluster headache. It has not yet been approved for the treatment of PTSD. This study is being conducted to better understand whether this type of stimulation may help improve PTSD symptoms and to evaluate its safety when used for this purpose. The main questions this study aims to answer are: - Is non-invasive vagus nerve stimulation safe for people with PTSD when used regularly at home? - Does treatment with the gammaCore device improve PTSD symptom severity over time? In this study, approximately 40 adults with PTSD will participate in an open-label pilot study. Participants will first complete a 4-week baseline period in which their PTSD symptoms are monitored. This allows researchers to understand each participant's symptoms before starting the intervention. Participants will then begin a 12-week treatment period using the gammaCore device at home. During this time, participants will apply the device to the side of the neck for short stimulation sessions each day as instructed by the study team. Participants will attend six study visits, some conducted remotely and some in person. These visits include screening, training on how to use the device, and follow-up assessments. During the study, participants will complete questionnaires and clinician-administered assessments that measure PTSD symptoms and quality of life. Researchers will also monitor participants for any side effects or medical problems related to the device. By collecting information on symptoms, safety, and device use, this study will help researchers understand whether non-invasive vagus nerve stimulation could become a useful treatment option for people living with PTSD.

Type: Interventional

Start Date: Mar 2026

open study

Trial of Acceptance and Mindfulness-based Exposure Therapy (AMBET) and Present Centered Therapy (PC1
Columbia University PTSD - Post Traumatic Stress Disorder Cardiac Arrest (CA)
The goal of this clinical trial is to learn if a new therapy called Acceptance- and Mindfulness-Based Exposure Therapy (AMBET) helps treat post-traumatic stress disorder (PTSD) in people who survived a cardiac arrest. This study will compare AMBET to another psychotherapy treatment called Present C1 expand

The goal of this clinical trial is to learn if a new therapy called Acceptance- and Mindfulness-Based Exposure Therapy (AMBET) helps treat post-traumatic stress disorder (PTSD) in people who survived a cardiac arrest. This study will compare AMBET to another psychotherapy treatment called Present Centered Therapy (PCT) to see which therapy is more effective in treating PTSD. The main questions it aims to answer are: Does AMBET reduce PTSD symptoms in survivors of cardiac arrest? How do the benefits of AMBET compare to PCT? Participants will: - Be randomly assigned to receive either AMBET or PCT - Attend 12 hours of individual psychotherapy sessions over about 12 weeks - Complete short weekly surveys about their mood and behaviors online - Wear a Fitbit device to track sleep and activity during the study - Do brief homework assignments between sessions

Type: Interventional

Start Date: Mar 2026

open study

Enhancing Brain And Mental Health Through Breathing Practice
Mayo Clinic Depressive Disorder Anxiety Adolescent
The purpose of this study is to evaluate the feasibility of a structured breathing intervention in rural and non-rural adolescents diagnosed with anxiety and depression, recruited from outpatient pediatric and child/adolescent psychiatry clinics. expand

The purpose of this study is to evaluate the feasibility of a structured breathing intervention in rural and non-rural adolescents diagnosed with anxiety and depression, recruited from outpatient pediatric and child/adolescent psychiatry clinics.

Type: Interventional

Start Date: Feb 2026

open study

Development of a College Student-Delivered Cognitive-Behavioral Therapy (CBT) Intervention for Rura1
Milton S. Hershey Medical Center Depression Anxiety Stress
This research is being done to find out the effectiveness, feasibility, and acceptability of a college student-delivered cognitive-behavioral therapy (CBT) intervention in high schools in rural Schuylkill County, Pennsylvania to treat mental health problems (i.e. depression and anxiety) in adolesce1 expand

This research is being done to find out the effectiveness, feasibility, and acceptability of a college student-delivered cognitive-behavioral therapy (CBT) intervention in high schools in rural Schuylkill County, Pennsylvania to treat mental health problems (i.e. depression and anxiety) in adolescents. This project will respond to the need for evidence-based, acceptable, accessible, and low-cost adolescent cognitive-behavioral interventions that lead to long-term improvements in adolescents' mental health outcomes.

Type: Interventional

Start Date: Feb 2026

open study

Mechanisms Of Orbitofrontal Stimulation in Depression
Subha Subramanian Major Depressive Disorder (MDD)
The orbitofrontal cortex (OFC), a region involved in emotional regulation, decision making, and reward processing, is a key area linked to antidepressant response. This study tests whether noninvasive stimulation of the OFC using transcranial magnetic stimulation (TMS) can improve depressive sympto1 expand

The orbitofrontal cortex (OFC), a region involved in emotional regulation, decision making, and reward processing, is a key area linked to antidepressant response. This study tests whether noninvasive stimulation of the OFC using transcranial magnetic stimulation (TMS) can improve depressive symptoms. TMS uses magnetic fields generated by a coil placed next to the scalp to alter brain activity.

Type: Interventional

Start Date: Apr 2026

open study

LIFU Mechanisms for PTSD in Healthcare Workers
Laureate Institute for Brain Research, Inc. PTSD and Trauma-related Symptoms
The goal of this clinical trial is to evaluate whether low-intensity focused ultrasound (LIFU) of the ventral anterior cingulate cortex (vACC) can normalize dysfunctional brain activation patterns and behaviors in frontline healthcare workers with post-traumatic stress disorder. The main questions1 expand

The goal of this clinical trial is to evaluate whether low-intensity focused ultrasound (LIFU) of the ventral anterior cingulate cortex (vACC) can normalize dysfunctional brain activation patterns and behaviors in frontline healthcare workers with post-traumatic stress disorder. The main questions it aims to answer are: - Does LIFU of the vACC effect activity and connectivity of the vACC and amygdala? - Does LIFU of the vACC reduce post-traumatic stress symptoms? Researchers will compare LIFU to sham modulation to see if LIFU modulates activity of vACC-amygdala circuitry and affects threat sensitivity and emotion regulation. Participants will: - Complete two fMRI sessions (before and after LIFU) - Receive a single session of LIFU or sham modulation of the vACC - Wear a wearable device that tracks sleep and heart rate metrics

Type: Interventional

Start Date: Dec 2025

open study

A Study to Evaluate the Efficacy and Safety of Adjunctive KarXT for the Treatment of Mania, With or1
Bristol-Myers Squibb Mania Bipolar Disorder
The purpose of this study is to evaluate the efficacy and safety of adjunctive KarXT for the treatment of mania in participants with Bipolar-I Disorder. expand

The purpose of this study is to evaluate the efficacy and safety of adjunctive KarXT for the treatment of mania in participants with Bipolar-I Disorder.

Type: Interventional

Start Date: Oct 2025

open study

Retrospective Analyses of the Greenbrook Database Evaluating Mental Health Treatments
Neuronetics Depression OCD Anxiety Depression
The study involves multiple retrospective analyses to understand the utilization of mental health treatments provided at Greenbrook and their effectiveness expand

The study involves multiple retrospective analyses to understand the utilization of mental health treatments provided at Greenbrook and their effectiveness

Type: Observational

Start Date: May 2025

open study

Multiphase Optimization Strategy (MOST) for Treating Pediatric Post-traumatic Stress Disorder (PTSD)
University of Rochester PTSD Trauma Pediatric ALL
The goal of this clinical trial is to test the extent to which different treatment components work to improve pediatric post-traumatic stress disorder (PTSD). It will also provide evidence for how these components work. The main research questions are: What are the effects of different components1 expand

The goal of this clinical trial is to test the extent to which different treatment components work to improve pediatric post-traumatic stress disorder (PTSD). It will also provide evidence for how these components work. The main research questions are: What are the effects of different components used to treat PTSD? What do these components change to produce benefits in PTSD? Researchers will: Compare components to a psychological placebo to estimate their effects and measure how they work Examine how components work alone and in conjunction with other components Participants will: Receive different combinations of components and placebo Attend weekly treatment sessions Provide information to evaluate changes in PTSD

Type: Interventional

Start Date: Mar 2026

open study

Personalized Ultrasonic Brain Stimulation for Depression (R61)
Brian Mickey Major Depressive Episode Depression - Major Depressive Disorder Treatment-Resistant Major Depressive Disorder
This study will evaluate a new form of non-invasive brain stimulation for individuals with depression. Personalized low-intensity transcranial focused ultrasound stimulation will be delivered using a range of stimulation parameters during psychological and physiological monitoring. Individualized o1 expand

This study will evaluate a new form of non-invasive brain stimulation for individuals with depression. Personalized low-intensity transcranial focused ultrasound stimulation will be delivered using a range of stimulation parameters during psychological and physiological monitoring. Individualized optimal targets will be selected using structural MRI and diffusion tractography. Brain target engagement will be evaluated using functional MRI.

Type: Interventional

Start Date: Mar 2025

open study

Identifying Cerebral Hemodynamic Patterns in Mood Disorders and Mild Cognitive Impairment: A Functi1
Mayo Clinic Major Depressive Disorder Bipolar Disorder Mild Cognitive Impairment
The purpose of this research is to measure brain activity in individuals with mood disorders and memory problems using a simple, safe, and noninvasive method called functional near-infrared spectroscopy (fNIRS). By comparing brain activity across different groups and relating it to symptom severity1 expand

The purpose of this research is to measure brain activity in individuals with mood disorders and memory problems using a simple, safe, and noninvasive method called functional near-infrared spectroscopy (fNIRS). By comparing brain activity across different groups and relating it to symptom severity, this study aims to improve our understanding of how these conditions affect the brain.

Type: Observational

Start Date: Mar 2025

open study

E-Mindfulness Approaches for Living After Breast Cancer
NRG Oncology Breast Cancer Depression
NRG-CC015 is a prospective, randomized phase III clinical trial to evaluate the efficacy of two distinct digital approaches for delivering a mindfulness-based intervention: a live, instructor-led version delivered over Zoom (MAPs LO), and an app-based, self-paced version (MAPs App). Participants wi1 expand

NRG-CC015 is a prospective, randomized phase III clinical trial to evaluate the efficacy of two distinct digital approaches for delivering a mindfulness-based intervention: a live, instructor-led version delivered over Zoom (MAPs LO), and an app-based, self-paced version (MAPs App). Participants will include younger breast cancer survivors (BCS) who were diagnosed with breast cancer at or before age 50 years, have completed their primary cancer treatment (i.e., surgery, radiation, and/or chemotherapy) at least 6 months earlier, and report elevated depressive symptoms.

Type: Interventional

Start Date: Jun 2025

open study

Oral Surgery Virtual Reality Glasses Study
Boston University Procedural Anxiety Procedural Pain
The goal of this randomized trial is to investigate if using virtual reality (VR) glasses for patients who require non-emergent oral surgery procedures under intravenous (IV) sedation improves their overall experience compared to using standard of care safety glasses. This study has two primary ob1 expand

The goal of this randomized trial is to investigate if using virtual reality (VR) glasses for patients who require non-emergent oral surgery procedures under intravenous (IV) sedation improves their overall experience compared to using standard of care safety glasses. This study has two primary objectives. 1. To evaluate if VR glasses can improve patient tolerance during IV access, sedation induction, and the surgical procedure. 2. To investigate whether the use of VR glasses reduces the amount of sedation required for induction and throughout the oral surgery procedure. 80 subjects will be randomly assigned 1:1 to either wear VR glasses playing a relaxing video and audio or VR glasses that will only serve as eye protection (control group).

Type: Interventional

Start Date: Nov 2025

open study

PCORI Comparative Effectiveness Study-Esketamine (Spravato) vs. Ketamine-Equivalence Study
Yale University Depression
The purpose of this study is to compare the relative effectiveness, acceptability, and side effects of ketamine delivered through an IV (a drip into the arm) which is not currently FDA approved for use in the treatment of treatment-resistant depression (TRD) and Esketamine (Spravato®), taken as a n1 expand

The purpose of this study is to compare the relative effectiveness, acceptability, and side effects of ketamine delivered through an IV (a drip into the arm) which is not currently FDA approved for use in the treatment of treatment-resistant depression (TRD) and Esketamine (Spravato®), taken as a nasal spray which has received FDA approval for use in the treatment of treatment-resistant depression (TRD) in the treatment of patients with treatment-resistant depression (TRD). The study will look at the following: - How well the treatment helps with symptoms of depression (effectiveness), - How comfortable and willing people are to use the treatment (acceptability), and - How well people can deal with any side effects from the treatment (tolerability). The study will also examine factors that may predict which treatment works better for certain patients.

Type: Interventional

Start Date: Jan 2025

open study