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.

The purpose of this protocol is to allow for the careful screening of patients and healthy volunteers for participation in research protocols on mood and anxiety disorders at the National Institute of Mental Health (NIMH) and for the collection of natural history data. 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); computed tomography (CT); electroencephalography (EEG); electrocardiography (EKG), magnetoencephalography (MEG); blood, saliva and urine laboratory evaluation; and a request for medical records. 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 protocols.

• INCLUSION CRITERIA:
• Subjects ages 3 to 99 may enroll in the protocol.
• Subjects must be competent to comprehend the purpose of the screening process and to provide written informed consent and be willing to participate in NIMH IRB approved research protocols. Minors will be asked to assent and their parents will sign the consent form.

EXCLUSION CRITERIA:

-Current alcohol or substance use or dependence (excluding nicotine) within the past 3 months of sufficient magnitude to require independent, concurrent treatment intervention (e.g. Antabuse or opiate treatment, but not including self-help groups).

Individuals being evaluated for mood and anxiety disorders and healthy volunteers

During the screening process, if a clinical issue arises that warrants further evaluation and/or possible treatment, the subject will be informed and advised to seek medical care in the appropriate setting outside of NIH.