Nelson Textbook of Pediatrics

Self-Injurious Behavior

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Aggression

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Lying, Stealing, and Truancy

Lying There are various reasons why a child might lie. For children between ages 2 and 4 yr, lying can be used as a method of playing with language. By observing the reactions of parents, preschoolers learn about expectations for honesty…

Disruptive, Impulse-Control, and Conduct Disorders

The disruptive, impulse-control, and conduct disorders are interrelated sets of psychiatric symptoms characterized by a core deficit in self-regulation of anger, aggression, defiance, and antisocial behaviors. The disruptive, impulse-control, and conduct disorders include oppositional defiant, intermittent explosive, conduct, other specified/unspecified…

Eating Disorders

Eating disorders (EDs) are characterized by body dissatisfaction related to overvaluation of a thin body ideal, associated with dysfunctional patterns of cognition and weight control behaviors that result in significant biologic, psychological, and social complications. Although usually affecting white, adolescent…

Suicide and Attempted Suicide

Youth suicide is a major public health problem. In 2014 for all youth between ages 10 and 19 yr in the United States, suicide was the 2nd leading cause of death, with approximately 5,500 lives lost each year. The suicide rate…

Mood Disorders

Mood disorders are interrelated sets of psychiatric symptoms characterized by a core deficit in emotional self-regulation. Classically, the mood disorders have been divided into depressive and bipolar disorders, representing the two emotional polarities, dysphoric (“low”) and euphoric (“high”) mood. Major…

Anxiety Disorders

Anxiety, defined as dread or apprehension, is not considered pathologic, is seen across the life span, and can be adaptive (e.g., the anxiety one might feel during an automobile crash). Anxiety has both a cognitive-behavioral component, expressed in worrying and…

Motor Disorders and Habits

Motor disorders are interrelated sets of psychiatric symptoms characterized by abnormal motor movements and associated phenomena. In the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), motor disorders include tic, stereotypic movement, and developmental coordination disorders. Tic disorders…