Adjustment Disorders   5 studies
Affective Disorders, Psychotic   451 studies
Affective Symptoms   3 studies
Aggression   190 studies
Agoraphobia   12 studies
AIDS Dementia Complex   19 studies
Alcohol Drinking   105 studies
Alcohol Withdrawal Delirium   1 study
Alcohol-Related Disorders   316 studies
Alcoholic Intoxication   9 studies
Alcoholism   285 studies
Alzheimer Disease   500 studies
Amnesia   41 studies
Amphetamine-Related Disorders   21 studies
Anorexia Nervosa   49 studies
Antisocial Personality Disorder   6 studies
Anxiety Disorders   702 studies
Anxiety, Separation   13 studies
Aphasia, Primary Progressive   28 studies
Asperger Syndrome   20 studies
Attention Deficit and Disruptive Behavior Disorders   327 studies
Attention Deficit Disorder with Hyperactivity   308 studies
Auditory Perceptual Disorders   4 studies
Autistic Disorder   134 studies
Behavior, Addictive   144 studies
Behavioral Symptoms   1387 studies
Bipolar Disorder   477 studies
Borderline Personality Disorder   35 studies
Bulimia Nervosa   50 studies
Cataplexy   9 studies
Catatonia   2 studies
Child Behavior Disorders   4 studies
Child Development Disorders, Pervasive   137 studies
Cocaine-Related Disorders   235 studies
Cognition Disorders   817 studies
Combat Disorders   8 studies
Communication Disorders   91 studies
Compulsive Behavior   26 studies
Conduct Disorder   26 studies
Consciousness Disorders   39 studies
Conversion Disorder   5 studies
Creutzfeldt-Jakob Syndrome   2 studies
Delirium   820 studies
Delirium, Dementia, Amnestic, Cognitive Disorders   810 studies
Delusions   19 studies
Dementia   844 studies
Dementia, Vascular   24 studies
Depersonalization   2 studies
Depression   1491 studies
Depression, Postpartum   39 studies
Depressive Disorder   1477 studies
Depressive Disorder, Major   626 studies
Developmental Disabilities   156 studies
Disorders of Excessive Somnolence   19 studies
Dissociative Disorders   5 studies
Drinking Behavior   60 studies
Dyslexia   14 studies
Dyslexia, Acquired   2 studies
Dyspareunia   12 studies
Dyssomnias   650 studies
Dysthymic Disorder   30 studies
Eating Disorders   118 studies
Encopresis   2 studies
Enuresis   9 studies
Erectile Dysfunction   152 studies
Feeding and Eating Disorders of Childhood   4 studies
Firesetting Behavior   1 study
Food Habits   5 studies
Gambling   29 studies
Heroin Dependence   53 studies
Huntington Disease   40 studies
Hypochondriasis   9 studies
Hysteria   5 studies
Impulse Control Disorders   43 studies
Impulsive Behavior   22 studies
Jet Lag Syndrome   4 studies
Learning Disorders   18 studies
Lewy Body Disease   12 studies
Marijuana Abuse   106 studies
Marijuana Smoking   11 studies
Mental Disorders   6171 studies
Mental Disorders Diagnosed in Childhood   566 studies
Mental Fatigue   2 studies
Mental Retardation   118 studies
Mood Disorders   1552 studies
Morphine Dependence   2 studies
Motor Skills Disorders   1 study
Mutism   3 studies
Narcolepsy   18 studies
Neonatal Abstinence Syndrome   7 studies
Neurocirculatory Asthenia   18 studies
Neurotic Disorders   6 studies
Nocturnal Enuresis   9 studies
Obsessive Behavior   1 study
Obsessive-Compulsive Disorder   97 studies
Opioid-Related Disorders   228 studies
Panic Disorder   82 studies
Paranoid Disorders   4 studies
Paraphilias   3 studies
Passive-Aggressive Personality Disorder   1 study
Pedophilia   2 studies
Personality Disorders   61 studies
Phobic Disorders   80 studies
Pick Disease of the Brain   28 studies
Psychoses, Substance-Induced   2 studies
Psychotic Disorders   1401 studies
Quality of Life   1008 studies
Reactive Attachment Disorder   1 study
REM Sleep Behavior Disorder   2 studies
Restless Legs Syndrome   68 studies
Rett Syndrome   11 studies
Schizophrenia   1022 studies
Schizophrenia and Disorders with Psychotic Features   998 studies
Schizophrenia, Catatonic   1 study
Schizophrenia, Childhood   2 studies
Schizophrenia, Disorganized   1 study
Schizophrenia, Paranoid   14 studies
Schizotypal Personality Disorder   7 studies
Seasonal Affective Disorder   14 studies
Self Mutilation   2 studies
Self-Injurious Behavior   47 studies
Sexual Dysfunctions, Psychological   201 studies
Shared Paranoid Disorder   1 study
Sleep Deprivation   29 studies
Sleep Disorders   708 studies
Sleep Disorders, Circadian Rhythm   20 studies
Sleep Disorders, Intrinsic   558 studies
Sleep Initiation and Maintenance Disorders   194 studies
Sleep-Wake Transition Disorders   1 study
Smoking   545 studies
Somatoform Disorders   46 studies
Stress Disorders, Post-Traumatic   279 studies
Stress Disorders, Traumatic   282 studies
Stress Disorders, Traumatic, Acute   5 studies
Stress, Psychological   31 studies
Substance Abuse, Intravenous   9 studies
Substance Withdrawal Syndrome   24 studies
Substance-Related Disorders   1179 studies
Suicide   53 studies
Suicide, Assisted   1 study
Suicide, Attempted   21 studies
Tic Disorders   52 studies
Tobacco Use Disorder   191 studies
Tourette Syndrome   48 studies
Transsexualism   3 studies
Trichotillomania   9 studies
Vaginismus   2 studies