Preface. Differential Diagnosis Step by Step. Differential Diagnosis by the Trees: Neurodevelopmental Presentations. Poor school performance. Behavioral problems in a child or adolescent. Speech disturbance. Distractibility. Psychotic Presentations. Delusions. Hallucinations. Catatonic symptoms. Bipolar Presentations. Elevated or expansive mood. Irritable mood. Depressive Presentations. Depressed mood. Suicidal ideation and behavior. Psychomotor retardation. Anxiety Presentations. Anxiety. Panic attacks. Avoidance behaviors. Trauma- and Stressor-Related Presentations. Trauma or psychosocial stressors involved in the etiology. Somatic Symptom Presentations. Somatic complaints or irrational anxiety about illness or appearance. Feeding or Eating Presentations. Appetite changes or unusual eating behavior. Sleep-Wake Presentations. Insomnia. Hypersomnolence. Sexual Dysfunction Presentations. Sexual dysfunction in a female. Sexual dysfunction in a male. Disruptive, Impulse-Control and Conduct Presentations. Aggressive behavior. Impulsivity or impulse control problems. Self-injury or self-mutilation. Substance-Related Presentations. Excessive substance use. Neurocognitive Presentations. Memory loss. Cognitive impairment. Etiological Medical Presentations. Etiological medical conditions. Differential Diagnosis By the Tables: Neurodevelopmental Disorders. Intellectual disability (intellectual developmental disorder). Communication disorders. Autism spectrum disorder. Attention-deficit/hyperactivity disorder. Specific learning disorders. Tic disorders. Schizophrenia Spectrum and Other Psychotic Disorders. Schizophrenia. Schizoaffective disorder. Delusional disorder. Brief psychotic disorder. Catatonic disorder (other specified). Bipolar and Related Disorders. Bipolar I disorder. Bipolar II disorder. Cyclothymic disorder. Depressive Disorders. Major depressive disorder. Persistent depressive disorder. Premenstrual dysphoric disorder. Disruptive mood dysregulation disorder. Anxiety Disorders. Separation anxiety disorder. Selective mutism. Specific phobia. Social anxiety disorder (social phobia). Panic disorder. Agoraphobia. Generalized anxiety disorder. Obsessive-Compulsive and Related Disorders. Obsessive-compulsive disorder. Body dysmorphic disorder. Hoarding disorder. Trichotillomania (hair-pulling disorder). excoriation disorder (skin-picking disorder). Trauma- and Stress-Related Disorders. Posttraumatic stress disorder/acute stress disorder. Adjustment disorder. Dissociative Disorders. Dissociative amnesia. Depersonalization-derealization disorder. Somatic Symptom and Related Disorders. Somatic symptom disorder. Illness anxiety disorder. Conversion disorder. Psychological factors affecting medical condition. Factitious disorder. Feeding and Eating Disorders. Avoidant/restrictive food intake disorder. Anorexia nervosa. Bulimia nervosa. Binge-eating disorder. Sleep-Wake Disorders. Insomnia disorder. Hypersomnolence disorder. Sexual Dysfunctions. Sexual dysfunction. Gender Dysphoria. Gender dysphoria. Disruptive, Impulse-Control, and Conduct Disorders. Oppositional-defiant disorder. Intermittent explosive disorder. Conduct disorder. Substance-Related and Addictive Disorders. Substance use disorder. Gambling disorder. Neurocognitive Disorders. Delirium. Neurocognitive disorder. Personality Disorders. Paranoid personality disorder. Schizoid personality disorder. Schizotypal personality disorder. Antisocial personality disorder. Borderline personality disorder. Histrionic personality disorder. Narcissistic personality disorder. Avoidant personality disorder. Dependent personality disorder. Obsessive-compulsive personality disorder. Personality change due to another medical condition. Paraphilic Disorders. Paraphilic disorder. Appendix: DSM-5 Classification. Alphabetic Index of Decision Trees. Alphabetic Index of Differential Diagnosis Tables.
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