OVERVIEW OF ANXIETY DISORDER - JU Medicine...• The Yerkes–Dodson law 1908 The law dictates that...
Transcript of OVERVIEW OF ANXIETY DISORDER - JU Medicine...• The Yerkes–Dodson law 1908 The law dictates that...
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OVERVIEW OF ANXIETY DISORDER
Radwan Banimustafa MD
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WHAT ARE ANXIETY DISORDERS?
• A group of 8 diagnosable disorders – some shared features– some distinct
• The most prevalent group of psychiatric conditions
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SHARED CLINICAL FEATURES
• Triggered by neutral stimuli• Maladaptive thinking patterns: tend to
catastrophize, misjudge probability• Prominent physical symptoms: autonomic
arousal• Typical behavioral responses: escape,
avoidance, help-seeking
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Anxiety and Perfomance
• The Yerkes–Dodson law 1908 The law dictates that performance increases with physiological or mental arousal, but only up to a point. When levels of arousal become too high, performance decreases. The process is often illustrated graphically as a bell-shaped curve which increases and then decreases with higher levels of arousal.
•
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DISTINCT CLINICAL FEATURES
Panic Disorder• “spontaneous” panic• Fear of bodily sensations Agoraphobia• Fear/avoid being alone or
being trappedGeneralized Anxiety Disorder• Worry about everyday thingsSpecific Phobia• Fear of specific situation or
activity
Social Phobia• Fear of Scrutiny and
negative evaluationObsessive Compulsive Disorder• Intrusive unwanted thoughts• Repetitive ritualistic
behaviorsPosttraumatic Stress Disorder• Exposure to violence• Intrusive thoughts, images• Avoidance• Hyperarousal
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WHY ARE ANXIETY DISORDERS IMPORTANT?
MALE FEMALE
LIFETIME LIFETIME
ANY ANXIETY DISORDER
19.2%
30.5%
NATIONAL COMORBIDITY STUDYKessler et al Arch Gen Psychiatry Jan 1994
THE MOST PREVALENT PSYCHIATRIC DISORDERS IN ADULTS
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ANXIETY DISORDERS CAUSE IMPAIRMENT
Daily life effects• Physical functioning• Social functioning• Pain• Fatigue• General health• Sense of well being
Increased risk of
• Income < $70,000 per year
• Fewer than 16 years of education
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Kessler et al. Arch Gen Psychiatry. 1999;56:617.
INCREASED RISK OF SUICIDE
• Overall Anxiety Disorders associated with 3fold risk for suicide attempts– PTSD: 6 fold risk– Panic Disorder and GAD: 5.6 fold risk– Social Phobia: 2.1 fold risk
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COMORBIDITY
Anxiety Disorders co-occur with many mental and physical disorders, esp.
• Major Depression • Bipolar Disorder• Other Anxiety Disorders• Substance Use Disorders
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COMORBIDITY (CONT.)
Other disorders more severe, harder to treat, more likely to recur
Psychiatric Examples:• Panic Disorder with Major Depression• Panic Disorder with Bipolar Disorders• OCD with SchizophreniaMedical Examples• Panic Disorder with Asthma• OCD with dermatologic problems
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DIAGNOSING ANXIETY DISORDERS
DSM IVPANIC DISORDERAGORAPHOBIAGENERALIZED ANXIETY DISORDEROBSESSIVE COMPULSIVE DISORDERSOCIAL PHOBIAPOSTTRAUMATIC STRESS DISORDERACUTE STRESS DISORDERSPECIFIC PHOBIA
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PANIC ATTACK
• Sudden escalation and rapid crescendo peak of 4 or more symptoms (physical symptoms prominent
• Panic can be – Spontaneous– situation predisposed – situation bound
• Can occur with any anxiety disorder and many other physical and mental disorders
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PANIC ATTACK SYMPTOMS
• Racing heart• Sweating• Trembling or
shaking• Feeling like its hard
to breathe• Feeling of Choking• Chest Pain• Nausea
• Feeling Dizzy• Tingling in hands or
feel• Feeling chilled or
hot• A feeling of unreality• Fear of losing
control or dying
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AGORAPHOBIA
Fear or avoidance of places where • Escape might be difficult or embarrassing
and/or • Help might not be available
in the event of having a panic attack or panic-like symptoms (feeling suddenly sick)
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TYPICAL AGORAPHOBIC SITUATIONS
• Driving• Travel in Bus, Train
or Plane • Bridge or Tunnel• Being far From
Home• Crowds• Standing in Line
• Church, movie theatre, auditorium
• Supermarket• Shopping Mall• Restaurant• Sports event• Home Alone
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PANIC DISORDER
• Recurrent spontaneous panic attacks• Persistent worry or behavior change, related
to– Experiencing panic– Consequences or implications of panic
• Occurs with and without agoraphobia
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PANIC DISORDER: ASSOCIATED SYMPTOMS
• General worries and anxieties,– related to health– separation from loved ones
• Low tolerance of medication• Demoralization
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PANIC DISORDER: BIOLOGICAL ABNORMALITIES
• Low pCO2 with normal pH• Tachycardia and episodic hypertension
• Panic occurs in response to pharmacological provocation, e.g.– Sodium lactate infusion– Carbon Dioxide inhalation
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PANIC DISORDER: FAMILIAL PATTERN
• 4-7 fold risk among first degree relatives • Identical twin has a significantly greater
risk of Panic Disorder than fraternal twin
• 50-75% of patients with Panic Disorder do not have a relative with Panic Disorder
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GENERALIZED ANXIETY DISORDER (GAD)
Excessive uncontrollable worry concerning everyday activities or events, associated with
• Feeling restless, keyed up, or on edge• Easy fatigue• Difficulty concentrating• Irritability• Muscle tension• Sleep disturbance
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OBSESSIVE COMPULSIVE DISORDER: OBSESSIONS
• Intrusive, unwanted thoughts, images or impulses
• Not simply excessive everyday worries• Recognized as irrational - attempts to
suppress or neutralize
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TYPICAL OBSESSIONS
• Contamination• Doubts• Orderliness• Aggressive, Horrific Impulses• Sexual Images• Disasters
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OBSESSIVE COMPULSIVE DISORDER: COMPULSIONS
• Ritualistic, repeated behaviors or mental “acts”
• Usually performed to ward off an obsession or to prevent a dreaded event
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TYPICAL COMPULSIONS
• Cleaning• Checking• Counting• Repeating• Seeking reassurance• Ordering
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OBSESSIVE COMPULSIVE DISORDER: ASSOCIATED SYMPTOMS
• Avoidance of situations that trigger an obsession or compulsion
• Hypochondriasis• Guilt, over-responsibility• Sleep disturbance• Skin conditions from excessive washing
or picking
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SOCIAL PHOBIA(SOCIAL ANXIETY DISORDER)
• Fear of scrutiny and negative evaluation by others in social or performance situations
• Social situations are avoided or endured with dread
• The person recognizes fear is excessive
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SOCIAL PHOBIA: ASSOCIATED SYMPTOMS
• Hypersensitivity to negative feedback, criticism, or rejection
• Difficulty being assertive• Low self esteem, feelings of inferiority• Under-developed social skills• Under-achievement in school or jobs
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AGE AT ONSET OF SOCIAL PHOBIA
0
5
10
15
20
25
30
0-5
6-10
11-1
5
16-2
0
21-2
5
26-3
0
31-3
5
36-4
0
41-4
5
46-5
0
51-5
5
56-6
0
61-6
5
66-7
0
71-7
5
Age (years)
num
ber o
f sub
ject
s
Schneier et al, 1992
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CONSEQUENCES OF SOCIAL PHOBIA
• Lower education (mean less than 11 years)
• Lower income, unemployment• Never marry
Magee et al, 1996
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SOCIAL PHOBIA: BARRIERS TO TREATMENT
• Lack of information about treatment• Misunderstanding the seriousness • Stigma • Avoidance of strangers
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POSTTRAUMATIC STRESS DISORDER
• Exposure to traumatic event
– Associated with serious physical injury or death – Experienced with intense fear, helplessness or
horror• Re-experiencing• Avoidance
• Hyperarousal
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PTSD: RE-EXPERIENCING
• Recurrent, unwanted recollections • Recurrent distressing dreams• Acting or feeling as if the event were recurring• Distress when confronted with reminders • Physical symptoms when confronted with
reminders
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PTSD: AVOIDANCE
• Avoiding feelings, thoughts or conversations• Avoiding activities, places or people • Inability to recall parts of the experience• Loss of interest or motivation to participate in
significant activities• Detached or estranged from others• Blunted feelings• Lost vision of the future, sense of foreshortened life
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PTSD: AROUSAL
• Sleep disturbance• Irritable, anger outbursts• Difficulty concentrating• Hypervigilant• Easy startle
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PTSD: ASSOCIATED SYMPTOMS• Guilt• Difficulty regulating emotions• Self-destructive behavior• Feeling unreal, losing a sense of time, or forgetting
important things• Physical symptoms• Shame, despair, feeling ineffectual• Feeling permanently damaged• Social withdrawal, relationship problems• Personality change
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ANXIETY DISORDERS ARE ASSOCIATED WITH BIOLOGICAL CHANGES
•Brain Imaging Abnormalities•Autonomic Activation
•Neuroendocrine Changes•Early Bio-behavioral Changes
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Brain Fear CircuitryAmorapanth P, et. al. Nature Neuroscience 2000; 3:74-79
LeDoux JE: The Emotional Brain. New York, Simon and Schuster, 1996
Behavioral and neurobiological responses to fear-arousing stimuli
• Freezing (periqueductal gray)• Autonomic activation (lateral hypothalamus)• Neuroendocrine response (paraventricular
hypothalamus)
Associative learning couples these responses to otherwise meaningless stimuli
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Amygdala
Lateral Nucleus• Creates link between conditioned and unconditioned
stimulus• Exposure to subsequent relevant stimulus, activates Central Nucleus: (coordinates fear response)
– periaqueductal gray region - freezing or immobility – lateral hypothalamus - autonomic responses – paraventricular hypothalamus – neuroendocrine
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Passive and Active Responding
Automatic (Involuntary,Passive) ResponseLateral nucleus Central nucleus
Deliberate (Voluntary, Active) ResponseLateral nucleus Basal nucleus
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Shift From Passive Fear to Active Coping in the BrainLeDoux J and Gorman J Am J Psychiatry 158:1953-1955, December 2001
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BEHAVIORAL INHIBITION:BIOBEHAVIORAL DIATHESIS FOR ANXIETY
DISORDERS
• 10% prevalence • Increased risk of anxiety disorders• Found among offspring of parents with
– panic disorder – agoraphobia– social phobia – depression
• Parents have higher frequency of anxiety disorders
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MANIFESTATIONS OF BEHAVIORAL INHIBITION
Infants: High motor activity, fretting response to novelty; high cardiovascular sympathetic tone
Toddler: Retreat from unfamiliar, shy, fearful, autonomic arousal
Children: Peripheral in peer play, multiple anxiety disorders
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TREATMENT OF ANXIETY DISORDERS
• Promote active coping• MEDICATION: Provide information, directly
moderate neurobiology• COGNITIVE BEHAVIORAL TREATMENT:
Provide information, Change neural circuitry through exposure, Teach specific coping techniques
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PATIENTS AND FAMILY NEED INFORMATION
• About the illness: symptoms and course– Biological aspects of anxiety – Psychological components of symptoms
• Simple principles of conditioned responses• Role of thoughts and behaviors in affecting
emotions • Relationship between physiology, psychology
and treatment
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PHARMACOLOGIC TREATMENT OF ANXIETY DISORDERS: EARLY GENERATION
• Typical Antidepressants, for example, – imipramine, – clomipramine, – nortriptyline, – monoamine oxidase Inhibitors (like phenelzine)
• Benzodiazepines (alprazolam, clonazepam) • Most worked for some, but not all of the anxiety
disorders
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PHARMACOLOGIC TREATMENT OF ANXIETY DISORDERS: NEWER MEDICATIONS
Selective Serotonin Reuptake Inhibitors• citalopram• fluoxetine• fluvoxamine• paroxetine• sertraline• VenlafaxineAct as “broad spectrum” antianxiety agents
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COGNITIVE BEHAVIORAL TREATMENTS ARE EQUALLY EFFICACIOUS AS
MEDICATION FOR ANXIETY DISORDERS
•Preferred by many patients•Associated with improvement in
biological as well as psychological abnormalities
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Catastrophicmisinterpretation
Conditionedresponse
Bodily Sensation
Fear
Physiologicalarousal
CBT MODEL OF PANIC DISORDER
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CBT FOR PANIC
• Focuses on fear of bodily sensations
• Provides information about model of illness & treatment
• Uses well-specified procedures to reduce fear response
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CBT Procedures Target Fear of Bodily Sensations
• Decrease physiological arousal–Breathing retraining
• Correct catastrophic misinterpretation–Provide information about panic & anxiety– Identify & challenge cognitive errors
• Extinguish conditioned fear– Interoceptive exposure – In vivo exposure for agoraphobia
• Treatment administered in 4-11 sessions
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CBT RESULTS
• Equivalent to medication in reducing panic attacks and anticipatory anxiety
• Strongly preferred by patients• Better long term follow-up
Barlow, Gorman, Shear and Woods JAMA 2000
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CBT CHANGES BIOLOGICAL REACTIVITY IN PANIC DISORDER PATIENTS
BEFORE TREATMENTResponse to Sodium
Lactate• 60% experience panic
attackResponse to Inhalation of
CO2• 60% experience panic
attack
Shear et al. Am J Psyc 148:795-797, 1991
AFTER TREATMENTResponse to Sodium
Lactate• 33% experience panic
attackResponse to Inhalation of
CO2• 20% experience panic
attack
Arlow et al. J Psychother Prac and Res 6: 145-150, 1997
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BEHAVIORAL STRATEGIES CAN BE USED WITH MEDICATION
• Provide information about the disorder and rationale for treatment– Usual response, side effects– Discuss beliefs about taking the medication– Follow progress closely
• Meet at least once with a family member to review diagnosis and plans
• Provide instructions for simple behavioral and cognitive strategies
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Behavioral Anxiety Management
• Decrease Physiological Arousal– Slow Abdominal Breathing– Progressive Muscle Relaxation
• Re-Instate Normal Activities• Exposure to Anxiety Provoking Situations
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Cognitive Therapy
• Target Negative Thinking and Logical Errors– Overestimation of Probability of Negative
Consequences– Catastrophizing
• Techniques– Identify and Challenge Negative Thoughts– Provide Alternative Explanations
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WHAT TO REMEMBER ABOUT ANXIETY DISORDERS
• Common and debilitating conditions• Often co-occur with other medical and
psychiatric conditions• Characterized by
– prominent somatic symptoms– catastrophic misinterpretations – escape and avoidance behaviors
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WHAT TO REMEMBER ABOUT ANXIETY DISORDERS
• Avoidance – Can prevent help-seeking – Inhibits reporting of symptoms
• Highly treatable– Medication, especially serotonin active
antidepressants– Cognitive behavioral treatment