© cengage learning 2016 eric j. mash david a. wolfe anxiety and obsessive—compulsive disorders 11
TRANSCRIPT
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© Cengage Learning 2016 © Cengage Learning 2016
Eric J. MashDavid A. Wolfe
Anxiety and Obsessive—CompulsiveDisorders
11
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• Anxiety: a mood state characterized by strong negative emotion and bodily symptoms of tension in anticipation of future danger or misfortune
• Anxiety disorders involve experiencing excessive and debilitating anxieties; occur in many forms
• Many children with anxiety disorders suffer from more than one type
Description of Anxiety Disorders
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• Moderate amounts of anxiety helps us think and act more effectively
• Excessive, uncontrollable anxiety can be debilitating
• The neurotic paradox is a self-defeating behavior pattern – fear with no threat
• Fight/flight response – Immediate reaction to perceived danger or
threat aimed at escaping potential harm
Experiencing Anxiety
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• Physical system – The brain sends messages to the sympathetic
nervous system, fight/flight response
• Cognitive system – Activation leads to feelings of apprehension,
nervousness, difficulty concentrating, and panic
• Behavioral system – Aggression is coupled with a desire to escape
the threatening situation
Three Interrelated Anxiety Response Systems
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The Many Symptoms of Anxiety
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• Anxiety - future-oriented mood state– May occur in absence of realistic danger
• Fear - present-oriented emotional reaction – Occurs in the face of a current danger and
marked by a strong escape tendency
• Panic – A group of physical symptoms of fight/flight
response - unexpectedly occur in the absence of obvious danger or threat
Anxiety Versus Fear and Panic
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• Moderate fear and anxiety are adaptive– Emotions and rituals that increase feelings of
control are common in children and teens
• Normal fears– Fears that are normal at one age can be
debilitating a few years later
– A fear defined as normal depends on its effect on the child and how long it lasts
– The number and types of fears change over time
Normal Fears, Anxieties, Worries, and Rituals
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Common Fears and Anxieties
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Common Fears and Anxieties (cont’d.)
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• Anxieties are common during childhood and adolescence– Common examples
• Separation anxiety
• Test anxiety
• Excessive concern about competence
• Excessive need for reassurance
• Anxiety about harm to a parent
Normal Anxieties
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• Girls display more anxiety than boys, but symptoms are similar
• Some specific anxieties decrease with age
• Nervous and anxious symptoms may remain stable over time
Normal Anxieties (cont’d.)
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• Children of all ages worry
• Worry serves a function in normal development– Moderate worry can help children prepare for
the future
• Children with anxiety disorders do not necessarily worry more– They worry more intensely than other children
Normal Worries
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• Normal routines help children gain control and mastery of their environment
• Many common childhood routines involve repetitive behaviors and doing things “just right” – Neuropsychological mechanisms underlying
compulsive, ritualistic behavior in normal development and those in OCD may be similar
Normal Rituals and Repetitive Behavior
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• Separation Anxiety Disorder (SAD)
• Generalized anxiety disorder (GAD)
• Specific phobia
• Social anxiety disorder
• Panic disorder (PD)
• Agoraphobia
• Selective mutism
Seven Categories of Anxiety Disorders
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• Separation anxiety is important for a young child’s survival – It is normal from about age 7 months through
preschool years
– Lack of separation anxiety at this age may suggest insecure attachment
• SAD is distinguished by:– Age-inappropriate, excessive, and disabling
anxiety about being apart from parents or away from home
Separation Anxiety Disorder (SAD)
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Diagnostic Criteria for Separation Anxiety Disorder
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• SAD is one of the two most common childhood anxiety disorders
• Occurs in 4-10% of children– It is more prevalent in girls than in boys
• More than 2/3 of children with SAD have another anxiety disorder and about half develop a depressive disorder
Prevalence and Comorbidity
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• SAD has the earliest reported age of onset of anxiety disorders (7-8 years of age) and the youngest age at referral
• Progresses from mild to severe
• Associated with major stress– Examples: moving to new neighborhood or
entering a new school
• SAD persists into adulthood for more than 1/3 of affected children and adolescents
Onset, Course, and Outcome
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• As adults, more likely to experience:– Relationship difficulties
– Other anxiety disorders and mental health problems
– Functional impairment in social and personal life
Outcome as Adults
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• School refusal behavior– Refusal to attend classes or difficulty
remaining in school for an entire day
• Occurs most often in ages 5-11
• Fear of school may be fear of leaving parents (separation anxiety), but can occur for many other reasons
• Serious long-term consequences result if it remains untreated
School Reluctance and Refusal
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• Age-inappropriate persistent, irrational, or exaggerated fear that leads to avoidance of the feared object or event and causes impairment in normal routine – Lasts at least 6 months
– Extreme and disabling fear of objects or situations that in reality pose little or no danger or threat
– Child goes to great lengths to avoid the object/situation
Specific Phobia
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Diagnostic Criteria for Specific Phobia
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• Prevalence and comorbidity– About 20% of children are affected at some
point in their lives, although few are referred for treatment
– More common in girls
• Onset, course, and outcome– Onset at 7-9 years - phobias involving
animals, darkness, insects, blood, and injury
– Clinical phobias are more likely than normal fears to persist over time
Specific Phobia (cont’d.)
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• A marked, persistent fear of social or performance requirements that expose the child to scrutiny and possible embarrassment– Anxiety over mundane activities
– Most common fear is doing something in front of others
– More likely than other children to be highly emotional, socially fearful; and inhibited, sad, and lonely
Social Anxiety Disorder (Social Phobia)
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Diagnostic Criteria for Social Phobia
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• Lifetime prevalence of 6-12% of children
• Twice as common in girls
• Two-thirds also have another anxiety disorder
• 20% also suffer from major depression and may self-medicate with alcohol and other drugs
• Most common age of onset is early to mid-adolescence, and is rare under age 10
Prevalence, Comorbidity, and Course
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Prevalence, Comorbidity, and Course (cont’d.)
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• Failure to talk in specific social situations, even though they may speak loudly and frequently at home or other settings
• Estimated to occur in 0.7% of children
• Average age of onset is 3-4 years
• May be an extreme type of social phobia, but there are differences between the two disorders
Selective Mutism
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• Panic attacks – Characteristics: sudden, overwhelming period
of intense fear or discomfort accompanied by four or more physical and cognitive symptoms characteristic of the fight/flight response
– Are rare in young children; common in adolescents
• Young children may lack cognitive ability to make catastrophic misinterpretations
– Are related to pubertal development
Panic
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• In severe cases, high anticipatory anxiety and situation avoidance may lead to agoraphobia – Fear of being alone in and avoiding certain
places or situations
– Fear of having a panic attack in situations where escape would be difficult or help is unavailable
– Does not usually develop until age 18 or older
Panic Disorder
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Diagnostic Criteria for Panic Disorder
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• Panic attacks are common (16% of teens)
• Panic disorder is less common (about 2.5% of teens 13-17 years)
• Panic attacks are more common in adolescent females than adolescent males
• Comorbidity adolescents with PD – Most commonly have another anxiety disorder
or depression• At risk for suicidal behavior; alcohol or drug abuse
Prevalence and Comorbidity
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• Onset, course, and outcome– Age of onset for first panic attack 15-19 years;
95% of PD adolescents are post-pubertal
– Lowest remission rate for any of the anxiety disorders
Onset, Course, and Outcome
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• Generalized anxiety disorder (GAD)– Excessive, uncontrollable anxiety and worry
– Worrying can be episodic or almost continuous
– Worry excessively about minor everyday occurrences
• Accompanied by at least one somatic symptom, such as:– Headaches, stomach aches, muscle tension,
and trembling
Generalized Anxiety Disorder
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Diagnostic Criteria for Generalized Anxiety Disorder
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• Prevalence and comorbidity– Nat’l survey: lifetime prevalence rate - 2.2%
– Equally common in boys and girls
– Accompanied by high rates of other anxiety disorders and depression
• Onset, course, and outcome– Average age of onset is early adolescence
– Older children have more symptoms
– Symptoms persist over time
Generalized Anxiety Disorder (cont’d.)
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• An unusual disorder of ritual and doubt– Characterized by recurrent, time-consuming
and disturbing obsessions and compulsions• Obsessions: persistent and intrusive thoughts,
urges, or images - experienced as intrusive and unwanted
• Compulsions: repetitive, purposeful, and intentional behaviors or mental acts performed to relieve anxiety
Obsessive-Compulsive Disorder
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• OCD is extremely resistant to reason
• OCD children often involve family members in rituals
• Normal activities of children with OCD are reduced, and health, social and family relations, and school functioning can be severely disrupted
Obsessive-Compulsive Disorder (cont’d.)
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Diagnostic Criteria for Obsessive-Compulsive Disorder
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• Prevalence and comorbidity– Lifetime prevalence in children and
adolescents is 1-2.5%
– Clinic-based studies find it twice as common in boys
– Comorbidities most common are other anxiety disorders, depressive disorders, disruptive behavior disorders
• Substance-use; learning and eating disorders; vocal and motor tics are also overrepresented
Prevalence and Comorbidity
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• Onset, course, and outcome– Average age of onset 9-12 years with peaks
in early childhood and early adolescence
– Chronic disorder - as many as two-thirds continue to have OCD 2-14 years after initial diagnosis
Onset, Course, and Outcome
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• Children with anxiety disorders display a number of associated characteristics– Cognitive disturbances
– Physical symptoms
– Social and emotional deficits
– Anxiety and depression
Associated Characteristics
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• Disturbance in how information is perceived and processed
• Intelligence and academic achievement – Despite normal intelligence, deficits are seen
in memory, attention, and speech or language
– High levels of anxiety can interfere with academic performance
– Those with generalized social anxiety may drop out of school prematurely
Cognitive Disturbances
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• Threat-related attentional biases– Selective attention is given to potentially
threatening information
– Anxious vigilance or hypervigilance permits the child to avoid potentially threatening events
Cognitive Disturbances (cont’d.)
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• Cognitive errors and biases– Perceptions of threats activate danger-
confirming thoughts
– Children with conduct problems select aggressive solutions in response to a perceived threat
– Children with anxiety disorders see themselves as having less control over anxiety-related events than other children
Cognitive Disturbances (cont’d.)
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• Somatic complaints, such as stomachaches or headaches, are more common in children with GAD, PD and SAD than in those with a specific phobia
• 90% with anxiety disorders have sleep-related problems, e.g., nocturnal panic
• High rates of anxiety in adolescence are related to reduced accidents and accidental deaths in early adulthood
Physical Symptoms
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• Anxious children – Display low social performance and high
social anxiety
– See themselves as shy and socially withdrawn, and report low self-esteem, loneliness, and difficulty initiating and maintaining friendships
– Have deficits in understanding emotion and in differentiating between thoughts and feelings
Social and Emotional Deficits
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• A child’s risk for accompanying disorders will vary with the type of anxiety disorder– Depression is diagnosed more often in
children with multiple anxiety disorders
– Negative affectivity: persistent negative mood,
– Positive affectivity: persistent positive mood• Negatively correlated with depression, but is
independent of anxiety symptoms and diagnoses
Anxiety and Depression
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• Physiological hyperarousal (somatic tension, shortness of breath, dizziness, etc.) may be unique to anxious children
• Predictors and environmental influences are different
Anxiety and Depression (cont’d.)
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• Higher incidence of anxiety disorders in girls suggests genetic influences and related neurobiological differences
• The experience of anxiety is pervasive across cultures
• Ethnicity and culture may affect the expression, developmental course, and interpretation of anxiety symptoms
Gender, Ethnicity, and Culture
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Cumulative Incidence of Anxiety Disorders in Females and Males
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• Classical psychoanalytic theory– Anxieties and phobias seen as defenses
against unconscious conflicts rooted in the child’s early upbringing
• Behavioral and learning theories– Fears and anxieties learned through classical
conditioning and maintained through operant conditioning (two-factor theory)
Theories and Causes – Early Theories
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• Bowlby’s theory of attachment – Fearfulness is biologically rooted in the
emotional attachment needed for survival
– Early insecure attachments lead children to view the environment as undependable, unavailable, hostile, and threatening
• Leading to development of anxiety and avoidance behaviors
• No single theory is sufficient
Early Theories (cont'd.)
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• Variations in behavioral reactions to novelty result in part from inherited differences in the neurochemistry of brain structures– Amygdala - primary function is to react to
unfamiliar or unexpected events
– Projections of amygdala to the motor system, anterior cingulate and frontal cortex, hypothalamus, and sympathetic nervous system
Temperament
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• Behavioral inhibition (BI): a low threshold for novel and unexpected stimuli – Place an individual at greater risk for anxiety
disorders
• Development of anxiety disorders in BI children depends on:– Gender, exposure to early maternal stress,
and parental response
Temperament (cont'd.)
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• Family and twin studies suggest – About 1/3 of the variance in childhood anxiety
symptoms is genetic
– Serotonin and dopamine systems are related to anxiety
– Genes are linked to broad anxiety-related traits (e.g., behavioral inhibition)
• No strong direct link between specific genetic markers and specific types of anxiety disorders
Family and Genetic Risk
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• The entire anxiety response system is controlled by several interrelated to produce anxiety– Hypothalamic-pituitary-adrenal (HPA) axis
– Limbic system
– Ventrolateral prefrontal cortex
– Other cortical and subcortical structures
– Primitive brain stem
Neurobiological Factors
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• An overactive behavioral inhibition system (BIS) implicated– BIS may be shaped by early life stressors
• Brain abnormalities have been implicated in children who are anxious and/or behaviorally inhibited
• Primary neurotransmitter system implicated in anxiety disorders– γ-aminobutyric acidergic (GABA-ergic)
system
Neurobiological Factors (cont'd.)
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• Parenting practices– Parents of anxious children are seen as
overinvolved, intrusive, or limiting child’s independence
• Prolonged exposure to high doses of family dysfunction associated with extreme trajectories of anxious behavior
• Low SES
• Insecure early attachments
Family Factors
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A Possible Developmental Pathway For Anxiety Disorders
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• Overview – Main line of attack for treating anxiety
disorders is exposing children to anxiety producing situations, objects, and occasions
• Treatments are directed at modifying:– Distorted information processing
– Physiological reactions to perceived threat
– Sense of a lack of control
– Excessive escape and avoidance behaviors
Treatment and Prevention
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• Main technique is exposure to feared stimulus – While providing children with ways of coping
other than escape and avoidance
• Systematic desensitization
• Flooding: prolonged repeated exposure
• Response prevention prevents child from engaging in escaping or avoidance stimuli
• Modeling and reinforced practice
Behavior Therapy
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• The most effective procedure for treating most anxiety disorders
• Almost always used with exposure-based treatments
• Coping Cat
• Skills training and exposure combat problematic thinking
• Computer-based CBT has also been shown to be effective
Cognitive-Behavior Therapy (CBT)
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• Child-focused treatments may have spillover effects into the family
• Addressing children’s anxiety disorders in a family context may result in more dramatic and lasting effects
• Family treatment for OCD:– Provides education about the disorder
– Helps families cope with their feelings
Family Interventions
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• Medications can reduce symptoms, especially for OCD– The most common and effective medications
are selective serotonin reuptake inhibitors (SSRIs), especially for OCD
– Medications are most effective when combined with CBT
• CBT is the first line of treatment
Medications
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• Prevention study – Researchers identified children with a mean
age of less than 4 years who were at-risk for later anxiety disorders
• Brief intervention (six 90-min group sessions) was carried out
– Intervention group (compared with a control group) showed fewer anxiety disorders and lower symptoms severity
• Untreated children may be on a worsening developmental trajectory
Prevention
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Prevention (cont’d.)