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Anxiety Disorders

Feelings of anxiety are an expected part of life that can occur in a variety of contexts, such as when we’re dealing with a problem at work, preparing for a test, or grappling with an important decision. However, when people experience anxiety that lasts for an extended period or worsens over time, they may have an anxiety disorder. The symptoms of an anxiety disorder can interfere with daily activities such as job performance, schoolwork, and relationships. Anxiety disorders include generalized anxiety disorder, panic disorder, social anxiety disorder, and phobia-related disorders. Learn more about anxiety disorders.

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Featured Studies

Featured studies include only those currently recruiting participants. Studies with the most recent start date appear first.

IntelliCare in College Students - Implementation (ICCS-I)

Study Type: Interventional
Start Date: February 5, 2020
Location: Chicago, Illinois
Eligibility: Ages 18 and Older, Accepts Healthy Volunteers

This study is a hybrid effectiveness-implementation trial of the smartphone student stress-management app IntelliCare for college students. This intervention will be tested with University of Illinois at Chicago (UIC) and Northern Illinois University (NIU) students. During the study, participants will complete measures of depressive and anxious symptoms, as well as measures of mental health literacy, within the app.

Low Intensity Family Support for Refugees in an LMIC

Study Type: Interventional
Start Date: August 16, 2019
Location: Istanbul, Turkey
Eligibility: Ages 12–55, Accepts Healthy Volunteers

The rapidly growing scale of humanitarian crises requires new response capabilities geared towards addressing populations with prolonged high vulnerability to mental health consequences and little to no access to mental health, health, and social resources. This R21 develops and pilot tests a novel model for helping urban refugee families in LMICs with little to no access to evidence-based mental health services, by delivering a transdiagnostic family intervention for common mental disorders in health sector and non-health sector settings. The project is located in Istanbul, Turkey. Aim 1 forms a Family Support Design Team (FSDT) to adopt the PM+ and CAFES manuals into a family support (FS) intervention for use with refugee families by lay providers in community sites and nurses in clinical sites using a four-session multiple family group format. Aim 2 pilots FS with families in community and clinical sites, and then through observations and qualitative interviews, assesses FS's feasibility, fidelity, the impact of context and local capacity, the experiences of intervention delivery, and practitioner and organizational perspectives on scale up. Aim 3 conducts pre, immediate post, and 3-month post assessments of the refugee families who received FS through all the sites, to demonstrate the kind of pre-post changes that have been reported for comparable interventions and to determine key parameters of interest with sufficient accuracy and precision. This exploratory investigation, conducted with the support and advice of the World Health Organization, will strengthen the research capabilities of the academic and community partners in Istanbul and will develop new evidence-based mental health services for refugees in Turkey and other LMICs, as well as for refugees and migrants in low resource communities in the United States.

Transcranial Direct Current Stimulation and Fear Extinction

Study Type: Interventional
Start Date: April 9, 2019
Location: New Haven, Connecticut
Eligibility: Ages 18–55, Accepts Healthy Volunteers

Psychiatric disorders characterized by pathological fear and anxiety are common and often disabling. Despite their limitations, exposure therapies are among the most efficacious treatments for these disorders. Extinction learning is thought to be a core mechanism of therapeutic exposure. Extinction learning is mediated by a well-defined circuit encompassing the medial prefrontal cortex (mPFC), amygdala, and hippocampus. This raises the exciting possibility that direct engagement of this circuitry might enhance the response to therapeutic exposure. Transcranial direct current stimulation (tDCS) is a neuromodulation technology that can augment brain plasticity, learning, and memory. The proposed study will evaluate whether tDCS can engage extinction circuitry, and improve extinction learning and memory.

This study will enroll psychiatrically healthy volunteers to test whether tDCS applied to the mPFC can augment spontaneous mPFC activity, engagement of extinction circuitry during extinction learning and recall, and classically-conditioned extinction learning and memory. Healthy volunteers will complete a standardized, three-day fear conditioning and extinction learning and memory task. On day 1, participants will complete a fear conditioning task. On day 2, participants will receive sham (placebo) or active tDCS prior to completing a fear extinction learning task. On day 3, participants will complete an extinction recall task. Electrodermal activity and heart rate will be continuously monitored during the conditioning and extinction procedures to assess autonomic arousal. All procedures will be completed in a magnetic resonance imaging (MRI) scanner; imaging data will be collected before and after tDCS and during all conditioning and extinction procedures.

Supporting Our Valued Adolescents Pilot Randomized Controlled Trial

Study Type: Interventional
Start Date: April 17, 2018
Location: Pittsburgh, Pennsylvania
Eligibility: Ages 12–19, Does Not Accept Healthy Volunteers

The purpose of this pilot study is to provide preliminary findings testing the Supporting Our Valued Adolescents (SOVA) intervention, two social media sites (one for adolescents, one for parents) aiming to address negative health beliefs, knowledge about depression or anxiety, parent-adolescent communication, in a moderated online peer community, with the goal of increasing adolescent use of mental health services.

Neuroplasticity in an Extended Amygdala Network as a Target Mechanism for Attention Bias Modification Outcome

Study Type: Interventional
Start Date: December 15, 2017
Location: Marquette, Michigan
Eligibility: Ages 18–37, Accepts Healthy Volunteers

Anxiety disorders are one of the most common psychological disorders. Underlying anxiety is an increased attentional bias to threat, which has been identified as a causal contributor in the development of anxiety. Given this causal relationship, attention bias modification was introduced as a treatment option where anxiety is reduced by training individuals to direct their attention away from threat and thereby decreasing anxiety. Over a decade of research using this approach, called attention bias modification (ABM), suggests that overall the approach is effective in reducing anxiety. Although ABM appears to be a very promising treatment option for anxiety, there are several factors limiting the effectiveness of ABM. These include the recognition of individual-level needs and a known underlying mechanism of action by which ABM is effective. Neuroimaging evidence suggests that attentional bias to visual threat is associated with a network of brain regions including the amygdala, anterior cingulate cortex, and visual cortex. In human participants, experience-dependent neuroplasticity is visible in voxel-based morphometry based measures of gray matter volume following training. Recently, voxel-based morphometry measures of gray matter volume have been linked to dendritic spine density—a known cellular mechanism for learning-related neuroplasticity. Thus, voxel-based morphometry measures are ideally suited to measure learning-related neuroplasticity following attention bias modification. In this proposal participants' level of attentional bias, anxiety, and gray matter volume will be measured before and after completing six weeks of attention bias modification training (N = 50) or attention control training (N= 50). The proposal aims to (1) establish that pre-treatment bias predicts variability in gray matter volume in the extended amygdala and anterior cingulate cortex, (2) assess the extent to which reduced extended amygdala and anterior cingulate cortex gray matter volume following ABM underlies reductions in attentional bias and anxiety, and (3) Establish pre-treatment bias as a predictor of successful ABM as measured by reduced bias, reduced anxiety, and reduced gray matter volume in the extended amygdala and anterior cingulate cortex. Consistent with the objectives of the AREA grant and NIMH's focus on identifying and validating new targets for treatment development that underlie disease mechanisms, the current proposal plans to involve students at a rural primarily undergraduate university in a research project aimed at establishing neuroplasticity in the extended amygdala and anterior cingulate cortex as a target mechanism for ABM training outcome, which could be used to objectively track training-related outcomes in anxiety treatment.

Dimensional Brain Behavior Predictors of CBT Outcomes in Pediatric Anxiety

Study Type: Interventional
Start Date: December 31, 2016
Location: Ann Arbor, Michigan
Eligibility: Ages 7–17, Accepts Healthy Volunteers

Anxiety is among the most prevalent, costly and disabling illnesses and tends emerge early in childhood. Cognitive behavioral therapy (CBT) is the first-line treatment for early life anxiety, but as many as 40% of young patients who receive CBT fail to get better. The proposed study will examine brain changes marking positive response to CBT for anxiety and how these changes may differ in children compared adolescents. By helping us to understand how CBT works, this study will pave the way for new treatments to stop anxiety early.

A Study Examining Adolescents With Non-Suicidal Self-Injury

Study Type: Observational
Start Date: August 31, 2016
Location: Minneapolis, Minnesota
Eligibility: Females, Ages 12–16, Accepts Healthy Volunteers

This study will examine longitudinal brain development in young adolescent girls with a history of Non-Suicidal Self-Injury (NSSI). Specifically, three constructs outlined by the the Research Domains Criteria (RDoC) will be examined through self-assessment, MRI, and a cognitive battery.

Approach-Avoidance Conflict-a Multi-level Predictor for Therapy Response

Study Type: Interventional
Start Date: June 30, 2016
Location: Tulsa, Oklahoma
Eligibility: Ages 18–55, Does Not Accept Healthy Volunteers

This project aims to identify brain and behavioral characteristics of individuals experiencing symptoms of generalized anxiety disorder that will predict the effectiveness of Exposure-based therapy versus Behavioral Activation Therapy. Brain imaging aspects of the study will use functional magnetic resonance imaging (fMRI) and electroencephalography (EEG). Behavioral assessments will include self-report questionnaires, computer-based and observational tasks, and interviews. Assessments will focus on how individuals process positive information (such as reward) and negative information (such as distressing images), as well as how people make decisions. These assessments will be conducted across 2-3 in-person sessions prior to beginning the treatment, and will be repeated across 2-3 in-person sessions after completing treatment. A blood draw will also be conducted pre- and post- treatment. Both the Exposure-based and Behavior Activation therapy will consist of 10, 90-minute weekly therapy sessions conducted in small groups.

A Hybrid Effectiveness-Implementation Trial of Group CBT in Urban Schools

Study Type: Interventional
Start Date: February 29, 2016
Location: Philadelphia, Pennsylvania
Eligibility: Ages 8–99, Accepts Healthy Volunteers

Unresolved psychological problems, such as anxiety, affect a significant number of our students and interfere with their ability to attend, actively participate, and prosper in school. This project will expand the capacity of selected mental health agencies to provide services in the participating schools through school therapeutic services (STS). The project will provide enhanced training in evidence-based behavioral health interventions to school-based mental health providers. The services will be implemented by STS Bachelor's or Master's level therapists supervised by their mental health agency supervisors (Internal Support), who are in turn supported by the research team (Train-the-Trainer) or external consultants (Train the Trainer+).

Community Study of Outcome Monitoring for Emotional Disorders in Teens

Study Type: Interventional
Start Date: January 31, 2016
Location: West Hartford, Connecticut
Eligibility: Ages 12–18, Does Not Accept Healthy Volunteers

Emotional disorders, including an array of anxiety and depressive syndromes, are the most common psychiatric disorders among adolescents, are highly comorbid, and severely impair the lives of youth and their families. Extant evidence-based therapies target only single disorders or symptom domains, are often not adopted by community mental health center (CMHC) clinicians, and have only modest effect sizes. To improve the clinical outcomes of these youth, the proposed study tests the effectiveness of two novel interventions (a transdiagnostic intervention, the Unified Protocol for the Treatment of Emotional Disorders in Adolescents, and a measurement and feedback system, the Youth Outcomes Questionnaires) relative to usual care in CMHCs.

Mechanism of Antidepressant-Related Dysfunctional Arousal in High-Risk Youth

Study Type: Interventional
Start Date: December 31, 2015
Locations: Stanford, California; Cincinnati, Ohio
Eligibility: Ages 12–17, Accepts Healthy Volunteers

A 16-week double blind, placebo-controlled investigation of escitalopram in adolescents with depression and/or anxiety with a family history of Bipolar Disorder. Subjects will be evaluated using semi-structured diagnostic interviews and symptom ratings, participate in a MRI scan and then randomized to treatment. Following randomization, high-risk youth will have visits every week for the first 4 weeks of treatment then biweekly up to 16 weeks during which time tolerability and ratings will be performed. MRI scan will be repeated at week 4.

Neural Basis of Meal Related Interoceptive Dysfunction in Anorexia Nervosa

Study Type: Interventional
Start Date: October 31, 2015
Location: Tulsa, Oklahoma
Eligibility: Ages 18–55, Accepts Healthy Volunteers

This study aims to identify the brain regions responsible for encoding cardiorespiratory 'interoceptive' sensations and determine whether they are dysfunctional in individuals affected by eating disorders, anxiety, depression, or brain injury. By evaluating the same interoceptive sensations across different human illnesses, the investigators hope to provide convergent evidence resulting in identification of core underlying neural processes, and to discern relative contributions in each condition.

Neurofunctional Predictors of Escitalopram Treatment Response in Adolescents With Anxiety

Study Type: Interventional
Start Date: May 31, 2015
Location: Cincinnati, Ohio
Eligibility: Ages 12–17, Accepts Healthy Volunteers

Neurofunctional Predictors of Escitalopram Treatment Response in Adolescents with Anxiety. To determine the effects of escitalopram on functional activation patterns during a Continuous Performance Task with Emotional and Neutral Distracters, the CPT-END. To examine baseline functional activity and functional connectivity profiles in the ventrolateral prefrontal cortex as markers of subsequent treatment response to escitalopram in adolescents with generalized anxiety disorder (GAD). To use proton magnetic resonance spectroscopy (1H MRS) to examine glutamatergic and γ-aminobutyric acid (GABA)-related abnormalities in the anterior cingulate in adolescents with GAD as compared to healthy adolescents.

Cognitive vs. Emotional Psychopharmacological Manipulations of Fear vs. Anxiety

Study Type: Interventional
Start Date: June 16, 2014
Location: Bethesda, Maryland
Eligibility: Ages 18–50, Accepts Healthy Volunteers

Objective:

The overall aim of this protocol is to examine the effect of pharmacological manipulations of affective and cognitive processes on anxiety and task performance. Ultimately, the goal is 1) to provide insight into the relative influence of cognitive and affective states on anxiety, 2) generate theoretical models that can be applied to a better understanding of the interaction between cognition and emotion, 3) develop a better screening approach to candidate anxiolytics, and 4) help formulate novel therapeutic interventions for clinical anxiety.

Excessive or inappropriately sustained anxiety and fear lead to the most common group of psychiatric disorders. A number of theoretical models have been proposed to understand the mechanisms engaged in these maladaptive behaviors. Most recent emphasis has focused on the synergistic contribution of cognitive and emotional processes. Our laboratory has been instrumental in delineating aspects of behavioral and neural processes that are associated with fear and anxiety, using psychophysiological and neuroimaging measures of fear and anxiety. Evidence shows that levels of anxiety modulate cognitive performance, such as working memory or perceptual discrimination, and that, conversely, cognitive engagement influences severity of experimentally induced anxiety. The exact contribution of emotional processes vs. cognitive processes to the experience of anxiety is not clear, similarly to the neural mechanisms underlying these interactions.

In this protocol, we propose to manipulate pharmacologically separately cognitive and emotional processes to dissociate their contribution to fear/anxiety, while using state-of-the-art measures of anxiety derived from translational work. Indeed, we already developed integrative experimental models of fear and anxiety via the manipulation of predictable and unpredictable shock, respectively. We already employed successfully these models to measure anxiolytic and anxiogenic effects of various compounds such as alprazolam, citalopram, hydrocortisone, and oxytocin in healthy participants.

We propose in a first step (step-1) to start with a simple proof-of-concept study, using two pharmacological compounds in a double-blind randomized parallel design, each preferentially acting respectively on the cognitive (methylphenidate) or affective (propranolol) domain, and using a single cognitive process (working memory). In a second step (step-2), we propose to extend this work to the fMRI to examine the cognitive correlates of the effects seen in the step-1 behavioral study, specifically with methylphenidate. Whereas the comparison among three drugs is planned for the electrophysiology study, we plan to study only the drug that improves cognition in the fMRI. The reason we will focus on methylphenidate in step 2 is that our overall goal is to study the effect of improving cognitive functions on anxiety using neuroimaging. To reach this goal, we plan to use different approaches to boost cognitive functions in the coming years, including psychopharmacology, direct current stimulation, mindfulness. Methylphenidate is our first psychopharmacological study towards this objective. Future work will also expand to other compounds and cognitive processes, as well as vary the strategy to induce anxiety. Presently, anxiety will be induced using the threat of shock, while participants perform the task. We will examine in step-1 whether 1) the reduction of induced-anxiety with propranolol improves cognitive performance, and 2) the facilitation of cognitive performance with methylphenidate reduces induced-anxiety. In step-2, we will identify the neural mechanisms underlying the effects of methylphenidate, the drug having beneficial effects on cognitive function.

Study population:

Medically and psychiatrically healthy adult males and females, aged 18 to 50 years.

Design:

The study is a double-blind design. For step-1, three groups of healthy participants will come for one experimental session. During this session, they will be asked to perform a working memory task under the threat of shock, i.e., while anticipating unpleasant electric shocks. Each group will receive one drug challenge, either placebo, propranolol (40 g) or methylphenidate (20 mg). For step-2, the study tasks will be conducted in a 3T fMRI scanner. In this step, only methylphenidate and placebo will be compared. Two groups will come for one experimental session, one will receive placebo and the other one will receive methylphenidate (20 mg). In a follow-up study for the step-2 fMRI the two groups will come for one experimental fMRI session one will receive methylphenidate (60 mg).

Outcome measures:

In step-1, the primary outcome measures are the startle reflex and performance on the working memory task. In step-2, the primary outcome measures are the startle reflex and the cerebral fMRI blood-oxygen-level ...

Development of Magnetic Resonance Imaging Techniques for Studying Mood and Anxiety Disorders

Study Type: Observational
Start Date: December 6, 2006
Location: Bethesda, Maryland
Eligibility: Ages 18–65, Accepts Healthy Volunteers

This study is intended to help develop new MRI imaging techniques for studying mood and anxiety disorders. Researchers believe that depression and anxiety disorders may cause structural and functional changes in the brain. This study will optimize the way MRI scans are collected to look at brain structure and examine how the brain behaves while subjects perform particular tasks.

Healthy normal subjects between 18 and 50 years of age who have never had a major psychiatric disorder and who have no first-degree relatives with mood disorders may be eligible for this study. Candidates are screened by phone with questions about their psychiatric and medical history, current emotional state and sleep pattern, and family history of psychiatric disorders. Candidates who pass the preliminary screening then undergo additional screening interviews and laboratory tests.

Participants undergo magnetic resonance imaging (MRI) and neuropsychological testing, as follows:

" MRI scans: Subjects are asked to participate in an MRI study on one of several scanners to measure blood flow in the brain, concentrations of certain chemicals in the brain, or magnetic properties of the brain. MRI uses a strong magnet and radio waves to obtain pictures of the brain. The subject lies still on a narrow bed with a metal coil close to the head. For this study, subjects may be asked to wear a special coil on the neck to help measure blood flow. They may be asked to watch a screen presenting images or to do a task in which they respond to pictures or sounds and may be asked to return for additional scans.

" Neuropsychological testing: Subjects may undergo tests of cognitive performance. Often, people with mood disorders have subtle changes in performance on these tests that allow researchers to pinpoint where brain abnormalities occur. Before the tests can be used in patients, they must be validated by using healthy subjects. These tests are presented either orally, in written form, or on a computer.

Family Study of Affective and Anxiety Spectrum Disorders

Study Type: Observational
Start Date: May 21, 2004
Location: Bethesda, Maryland
Eligibility: Ages N/A–60, Accepts Healthy Volunteers

This study will examine how depression, anxiety, and migraine run in families. It will help in defining the risk factors for physical, mental, and health problems-as well as define ways that those problems may be prevented and treated.

A broad range of ages among family members will be included to evaluate the patterns of how these disorders are expressed throughout people's lives. Children of all ages will be included, and those ages 8 to 17 will be interviewed directly.

Assessments will be collected through criteria of the Diagnostic and Statistical Manual of Mental Disorders IV as well as the spectrum, or range, of mood disorders and co-existing conditions. A member of the study team will visit the participants at home or will do an interview by telephone. Participation will take approximately 3 to 4 hours. Children will complete questionnaires given by the research team as well as questionnaires that they will do by themselves. The questions will pertain to the children's health, including physical and mental health and medical history, social relationships, problems, skills, and ways of dealing with important or stressful issues in their lives. These questionnaires will take up to 1 hour to complete.

Health history gathered from adult participants will pertain to height, weight, exercise, and general function. Women will be asked about the use of oral contraceptives, estrogen, and progesterone. In addition, there will be questionnaires on personality and temperamental traits, that is, behavior and impulsiveness. Questions will also involve social intuition, family and other environmental factors, general functioning, and basic demographics such as ethnicity, race, socioeconomic status, marital status, education level, and employment history.

Families enrolled in this phase of the research will be invited to participate in the next phase. There would be follow-up to evaluate the development of mood disorders, subtypes, and syndromes across the lifespan.

Expectation of Unpleasant Events in Anxiety Disorders

Study Type: Interventional
Start Date: February 27, 2003
Location: Bethesda, Maryland
Eligibility: Ages 18–50, Accepts Healthy Volunteers

Fear and anxiety are normal responses to a threat. However, anxiety is considered abnormal when the response to the threat is excessive or inappropriate. This study will examine changes in the body and brain that occur during unpleasant learning experiences in healthy volunteers with high, moderate, and low levels of anxiety.

A high degree of generalized anxiety is a component of many anxiety disorders and is regarded as a marker of vulnerability for these disorders. People with anxiety disorders and individuals with high degrees of anxiety have inappropriate expectations of unpleasant events. This study will investigate the development of expecting unpleasant events in healthy volunteers with varying degrees of anxiety using aversive conditioning models. A later phase of the study will enroll participants with anxiety disorders and compare their responses to those of healthy volunteers.

Patients who meet criteria for an anxiety disorder, and healthy volunteers who have no history of psychiatric or major medical illness will be enrolled in this study. Volunteers will come to the NIH Clinical Center three times for outpatient testing.

Brain Changes in Fear

Study Type: Interventional
Start Date: October 15, 2002
Location: Bethesda, Maryland
Eligibility: Ages 18–50, Accepts Healthy Volunteers

The purpose of this study is to use brain imaging technology to investigate brain changes in people exposed to predictable versus unpredictable unpleasant stimuli. Unpleasant events that can be predicted evoke a response of fear, whereas unpredictable, unpleasant stimuli cause chronic anxiety not associated with a specific event. Information gained from this study may help in the development of more effective treatments for anxiety disorders.

When confronted with fearful events, people eventually develop fear of specific cues that were associated with these events as well as to the environmental context in which the fearful event occurred. Evidence suggests that cued fear and contextual fear model different aspects of anxiety. However, studies that examine the way the brain affects expression of contextual fear have not been conducted. This study will use magnetic resonance imaging (MRI) or Magneto-encephalography (MEG) to compare the brain activity underlying fear brought on by predictable and unpredictable aversive stimuli.

Clinical Trial of Fluoxetine in Anxiety and Depression in Children, and Associated Brain Changes

Study Type: Interventional
Start Date: June 28, 2001
Location: Bethesda, Maryland
Eligibility: Ages 8–50, Accepts Healthy Volunteers

This study uses functional magnetic resonance imaging (fMRI) to learn how the brain functions in adolescents receiving fluoxetine (Prozac) cognitive behavioral therapy (CBT) or interpersonal therapy (IPT) for anxiety or depression in children/adolescents.

All participants will receive interviews to assess how they are doing in general, including general mood, degree of nervousness and behavior. Each participant and one of his or her parents will be interviewed separately and together. Those electing the medication study will also receive a physical examination. Participants are asked to complete tasks involving problem-solving and memory that involve looking at pictures, remembering things, testing reaction times, and making simple choices.

Participants with anxiety or depression will first meet with a psychiatrist or psychologist for two weekly sessions of talk therapy.

Those who remain anxious or depressed after these 2 weeks will have the 3 options based on their choice: 1) treatment with fluoxetine daily for 8 weeks 2) cognitive-behavioral therapy or interpersonal therapy (two kinds of talk therapy) once a week for 8 weeks 3) a random assignment (50% chance) to either placebo or fluoxetine for 8 weeks. In addition, subjects also will be randomly and blindly assigned to receive either an active computer-based training task or an inactive computer-based training task, administered as part of the other,along with their medication or talk -therapy treatment. The active training is thought to help anxiety whereas the inactive training is thought to have no effect. The purpose of this part of the study is to understand the best way to help children and adolescents who are having problems with anxiety. However, more research is needed to find the best way to help such children and adolescents. During and after the 8 weeks of treatment, each participant will complete verbal and written symptom ratings. Blood samples will be drawn for laboratory tests before drug treatment and after it ends.

Those who have not improved by the end of the study will be offered other treatment for 1 to 3 months, and the clinicians will help with finding subsequent aftercare. Those who improve with treatment will continue therapy at NIH until an outside physician is able to assume responsibility for monitoring medication.

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Evaluation of Patients With Mood and Anxiety Disorders and Healthy Volunteers

Study Type: Observational
Start Date: December 9, 1997
Location: Bethesda, Maryland
Eligibility: Ages 3–99, Accepts Healthy Volunteers

The purpose of this protocol is to allow for the careful screening of patients and healthy volunteers for participation in research protocols in the Experimental Therapeutics and Pathophysiology Lab (ETPB) at the National Institute of Mental Health (NIMH) and for the collection of natural history data. In addition the protocol will allow clinicians to gain more experience in the use of a variety of polysomnographic and high-density EEG recordings. Subjects in this protocol will undergo an evaluation which may include: a psychiatric interview; a diagnostic interview; rating scales; a medical history; a physical exam; brain magnetic resonance imaging (MRI); electroencephalography (EEG); electrocardiography (EKG), magnetoencephalography (MEG); blood, saliva and urine laboratory evaluation; and a request for medical records. Subjects may also be asked to complete questionnaires about attitudes towards research and motivation for research participation. The data collected may also be linked with data from other mood and anxiety disorder protocols (e.g., brain imaging, DNA, psychophysiology tests, treatment studies, etc) for the purposes of better understanding the diagnosis, pathophysiology, and treatment response of patients with mood disorders. Parents of minors will be interviewed. Upon conclusion of the screening process, subjects will either be offered participation in a research protocol and will sign the appropriate informed consent, or will be considered not appropriate for participation in research and will be referred back into the community. The current protocol thus serves as an entry point for individuals with mood or anxiety disorders or healthy volunteers to enter NIMH IRB approved ETPB protocols.