chapter 4 anxiety disorders. fear fear – the present-oriented mood state – immediate fight or...
TRANSCRIPT
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Chapter 4
Anxiety Disorders
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Fear
• Fear – the present-oriented mood state– Immediate fight or flight response to danger or
threat– Involves abrupt activation of the sympathetic
nervous system– Strong avoidance/escapist tendencies– Marked negative affect
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Anxiety
• Anxiety – the future-oriented mood state– Apprehension about future danger or misfortune– Somatic symptoms of tension– Characterized by marked negative affect
• Anxiety and fear are normal emotional states
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From Normal to Disordered Fear and Anxiety
• Characteristics of anxiety disorders– Pervasive and persistent symptoms of anxiety and
fear– Involve excessive avoidance and escape– Cause clinically significant distress and impairment
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The Phenomenology of Panic Attacks
• What is a panic attack?– Abrupt experience of intense fear or discomfort– Several physical symptoms
(e.g., breathlessness, chest pain)– Fear as an alarm response
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The Phenomenology of Panic Attacks
• DSM-IV-TR subtypes of panic attacks– Situationally bound (cued) – Unexpected (uncued) – Situationally predisposed
• Cultural influences on anxiety
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The Complexity of Anxiety Disorders
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Biological Contributions to Anxiety and Panic
• Genetic vulnerability• Anxiety and brain circuits – Depleted levels of GABA
• Behavioral inhibition system (BIS) – Limbic system – responds to threat signals by
inhibiting activity and causing anxiety
• Fight/flight system (FF) – Fear
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Psychological Contributions to Anxiety and Fear
• Early childhood Experiences– Uncontrollability and unpredictability– Observational learning/modeling
• Behavioral and cognitive views– Invokes conditioning and cognitive explanations– Anxiety and fear are learned responses– Catastrophic thinking and appraisals play a role
• Social contributions– Stressful life events trigger vulnerabilities
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An Integrated Model
• Integrative view – triple vulnerability model– Generalized biological vulnerability – Generalized psychological vulnerability– Specific psychological vulnerability
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An Integrated Model
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An Integrated Model – Comorbidity
• Common processes: the problem of comorbidity – Comorbidity is common across the anxiety
disorders– Major depression is the most common secondary
diagnosis– About half of patients have two or more
secondary diagnoses– Comorbidity suggests• Common factors• A relation between anxiety and depression
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The Anxiety Disorders: An Overview
• Generalized anxiety disorder (GAD)• Panic disorder with and without agoraphobia
(PDA)• Specific phobias• Social phobia (SAD)• Posttraumatic stress disorder (PTSD)• Obsessive-compulsive disorder (OCD)
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Generalized Anxiety Disorder: The “Basic” Anxiety Disorder
• Overview and defining features– Excessive uncontrollable anxious apprehension
and worry– Coupled with strong, persistent anxiety– Persists for six months or more– Somatic symptoms differ from panic
(e.g., muscle tension)
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Difficulty concentrating
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Generalized Anxiety Disorder: The “Basic” Anxiety Disorder
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Generalized Anxiety Disorder: The “Basic” Anxiety Disorder
• Statistics– Affects about 3.1% of the general population– Females outnumber males approximately 2:1– Onset is often insidious, beginning in early
adulthood– Very prevalent among the elderly– Tends to run in families
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Generalized Anxiety Disorder: Associated Features and Treatment
• Associated features– Genetics – not GAD, but the tendency to become
anxious– Chronically tense – high muscle tension– Highly sensitive to personal threat– “Automatic restrictors”• Individuals with GAD show less responsiveness on most
physiological measures (e.g., heart rate, blood pressures) than individuals with other anxiety disorders• Intense “cognitive processing” in frontal lobes
– Results in constant worrying = fail to process emotional component of thoughts and images (i.e., mental avoidance)
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Generalized Anxiety Disorder: Associated Features and Treatment
• Treatment of GAD: Generally weak– Benzodiazepines – often prescribed– Antidepressants – SSRIs; may be treatment of choice– Psychological interventions –
cognitive-behavioral therapy– Meditation therapy– Psychological treatments are typically more effective
in the long-term
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Panic Disorder With and Without Agoraphobia
• Overview and defining features– Experience of unexpected panic attack (i.e., a false
alarm)– Develop anxiety, worry, or fear about another
attack – Many develop Agoraphobia • Fear of being in places where escape might be difficult,
or where help might not be available• Typically results in being “housebound” or only being
able to leave your house within a certain radius
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Panic Disorder With and Without Agoraphobia
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Panic Disorder With and Without Agoraphobia
• Facts and statistics– Affects about 2.7% of the general population– Onset is often acute, mean onset between 20 and
24 years of age– 66% of individuals with agoraphobia are female
• Causes– Triad – biological, psychological, social• Theme for most disorders…
– Vulnerability to stress = strong “alarm” system• Interpret normal physical sensations in catastrophic
way; then get more anxious… “vicious cycle”
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Panic Disorder With and Without Agoraphobia
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Panic Disorder: Associated Features and Treatment
• Associated features– Nocturnal panic attacks – 60% panic during deep non-
REM sleep– Interoceptive/exteroceptive avoidance• Avoid situations/activities that may elicit certain
physiological arousal
• Medication treatment– Target serotonergic, noradrenergic, and GABA systems– SSRIs (e.g., Prozac and Paxil) are preferred drugs– Relapse rates are high following medication
discontinuation
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Panic Disorder: Associated Features and Treatment
• Psychological and combined treatments– Cognitive-behavioral therapies are highly effective– No evidence that combined treatment produces
better outcome– Best long-term outcome is with cognitive-
behavioral therapy alone
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Specific Phobias
• Overview and defining features– Extreme irrational fear of a specific object or
situation– Persons will go to great lengths to avoid phobic
objects– Most recognize that the fear and avoidance are
unreasonable– Markedly interferes with one’s ability to function
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Specific Phobias
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Specific Phobias
• Facts and statistics– Females are again over-represented (varies by
phobia)– Affects about 12.5% of the general population• One of the most common psychological disorders in
the U.S. and around the world
– Phobias tend to run a chronic course• Only the most severe cases seek treatment
– Mildly affected people tend to work around their phobias
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Specific Phobias: Associated Features and Treatment
• Subtypes of specific phobia– Blood-injury-injection – seeing blood or receiving
an injection– Situational – e.g., bridges, elevators, flying,
driving, enclosed places– Natural environment – e.g., storms, heights, water– Animal phobia – animals and insects– Other – e.g., fear of chocking, vomiting,
contracting an illness– *[Separation anxiety – seen in children]
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Specific Phobias: Associated Features and Treatment
• Causes of phobias– Traumatic conditioning
• Direct experience – real danger or pain results in a true alarm response• Vicarious – observational learning• Information transmission – receive information/warned
– Prepared tendency• Biological and evolutionary vulnerability
– Thoughts/worry that the event will happen again
• Psychological treatments of specific phobias– Cognitive-behavior therapies are highly effective – exposure-
based
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Social Phobia
• Overview and defining features– Extreme and irrational fear in social/performance
situations– Markedly interferes with one’s ability to function– Often avoid social situations or endure them with
great distress– Generalized subtype – affects many social
situations
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Social Phobia
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Social Phobia
• Facts and statistics– Affects about 12.1% of the general population– Prevalence is slightly greater in females than
males– Second only to specific phobia in the anxiety
disorders– Onset is usually during adolescence– Peak age of onset at about 13 years
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Social Phobia: Associated Features and Treatment
• Medication treatment – Tricyclic antidepressants and monoamine oxidase
inhibitors – SSRIs Paxil, Zoloft, and Effexer – are FDA approved – Relapse rates are high following medication
discontinuation
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Social Phobia: Associated Features and Treatment
• Causes– Biological and evolutionary vulnerability– Similar learning pathways as specific phobias
• Psychological treatment– Cognitive-behavioral treatment (CBT)– Cognitive-behavioral group treatment (CBGT)– Cognitive-behavioral therapies are highly effective
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Posttraumatic Stress Disorder (PTSD)
• Overview and defining features– Main etiologic characteristics – trauma exposure and
response– Reexperiencing (e.g., memories, nightmares,
flashbacks)– Avoidance – Emotional numbing and interpersonal problems – Markedly interferes with one's ability to function– PTSD diagnosis – only after one month post-trauma• Acute Stress Disorder – symptoms begin within four weeks
of event and last for less than one month
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Posttraumatic Stress Disorder (PTSD)
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Posttraumatic Stress Disorder (PTSD):
• Statistics– Many individuals who experience trauma do not
go on to develop PTSD• i.e., lower than expected rates in trauma victims
– Affects about 6.8% of the general population– Combat and sexual assault are the most common
traumas
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PTSD: Associated Features and Treatment
• Subtypes and associated features of PTSD– Acute – may be diagnosed one-three months post
trauma– Chronic – diagnosed after three months post
trauma– Delayed onset – onset six months or more post
trauma– Acute stress disorder – PTSD immediately post-
trauma
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PTSD: Associated Features and Treatment
• Causes of PTSD– Intensity of the trauma and one's reaction to it
(i.e., true alarm)– Learned alarms – direct conditioning and
observational learning – Biological vulnerability– Uncontrollability and unpredictability– Extent of social support, or lack thereof, post-
trauma
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PTSD: Associated Features and Treatment
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PTSD: Associated Features and Treatment
• Psychological treatments– Cognitive-behavioral therapies (CBT) are highly
effective– CBT may include graduated or massed (e.g.,
flooding) imaginal exposure• Specific approach: Trauma-Focused CBT
– Aim of CBT for PTSD– SSRIs
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Obsessive-Compulsive Disorder (OCD)
• Overview and defining features– Obsessions – intrusive and nonsensical thoughts,
images, or urges• Symmetry, forbidden thoughts, cleaning and
contamination, safety-memory, [hording 15.4%]
– Compulsions – thoughts or actions to neutralize thoughts (i.e., reduces anxiety for a short period)• Cleaning; checking; order/balance; touching, verbal,
and/or counting
– Vicious cycle of obsessions and compulsions– Cleaning and washing or checking rituals are
common
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Obsessive-Compulsive Disorder (OCD)
• Overview and defining features– Tic disorder (involuntary movement) is common
to co-occur with OCD, especially children– [Involuntary vocalizations is referred to as
Tourette’s Disorder]– Hoarding• Often experience great pleasure (sometimes euphoria)
from shopping/collecting various items– Often in response to depressive feelings – “retail therapy”
• Great anxiety and distress to throw anthing away (because it might be something important)• Greatly impairs daily/social functioning
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Obsessive-Compulsive Disorder (OCD)
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OCD: Associated Features and Treatment
• Statistics – Affects about 1.6% of the general population– Most with OCD are female– Onset is typically in early adolescence or young
adulthood– OCD tends to be chronic
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OCD: Associated Features and Treatment
• Causes of OCD– Parallels the other anxiety disorders– Early life experiences – Learning that some thoughts are
dangerous/unacceptable– Thought-action fusion – the thought is similar to
the action
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OCD: Associated Features and Treatment
• Medication treatment– Clomipramine and other SSRIs – benefit up to 60%
of patients– Relapse is common with medication
discontinuation– Psychosurgery (cingulotomy – lesion of the
cingulate bundle) is used in extreme cases
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OCD: Associated Features and Treatment
• Psychological treatment– Cognitive-behavioral therapy is most effective– CBT involves exposure and response prevention– Combining CBT with medication – no better than
CBT alone– Exposure and ritual prevention (ERP) – more
effective than drugs
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Summary of the Anxiety Disorders
• Most common forms of psychopathology • From a normal to a disordered experience of
anxiety and fear– Triple vulnerabilities – bio-psycho-social– Fear and anxiety – non-dangerous bodily or
environmental cues– Symptoms and avoidance – significant distress
and impairment
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Summary of the Anxiety Disorders
• Psychological treatments are generally superior in the long-term– Similar treatments for different anxiety disorders• CBT is generally the most effective form of treatment
across all anxiety disorders
– Suggests that anxiety-related disorders share common processes
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DSM-5 Proposed Changes
• http://www.dsm5.org/ProposedRevisions/Pages/AnxietyDisorders.aspx