Causes & Treatment of Generalized Anxiety Disorder (GAD)

Causes of Generalized Anxiety Disorder

GAD is one of the most chronic anxiety disorders, characterized by persistent, excessive worry. Multiple factors contribute to its development and maintenance.

Biological Factors

Genetic Contribution

Substantial Heritability: GAD has significant genetic component

Heritability Estimates:

  • 30-40% of variance attributable to genetic factors
  • Runs in families: First-degree relatives of individuals with GAD have 6 times higher risk than general population
  • Higher family risk than many other anxiety disorders

What Is Inherited:

  • Not GAD specifically but general anxiety proneness
  • Neuroticism: Personality trait characterized by tendency to experience negative emotions, anxiety, worry
  • Behavioral inhibition: Similar to other anxiety disorders
  • Physiological reactivity: Tendency toward heightened stress responses

Twin Studies:

  • Monozygotic (identical) twins: If one has GAD, other has approximately 30-40% chance
  • Dizygotic (fraternal) twins: If one has GAD, other has approximately 15-20% chance
  • Clear genetic contribution but not deterministic (environment also critical)

Overlapping Genetic Risk:

  • Genetic factors for GAD overlap significantly with:
    • Major depressive disorder (shared genetic vulnerability)
    • Other anxiety disorders
    • Neuroticism trait
  • Explains high comorbidity between GAD and depression

Neurobiological Factors

Brain Structure and Function:

1. Amygdala (Fear/Threat Center):

  • Hyperactive in GAD
  • Overresponds to potential threats (even minor or ambiguous ones)
  • Constantly signals “danger”
  • Lower threshold for threat detection

2. Prefrontal Cortex (PFC):

  • Deficient regulation of amygdala
  • Normally PFC inhibits/controls amygdala activity
  • In GAD: Impaired top-down control
  • Cannot adequately “turn off” worry and anxiety
  • Difficulty with emotion regulation

3. Anterior Cingulate Cortex (ACC):

  • Involved in error detection, conflict monitoring, emotion regulation
  • Altered activity in GAD
  • May contribute to excessive worry about potential problems

4. Hippocampus:

  • Involved in context processing
  • May be impaired in GAD
  • Difficulty determining whether situation is actually threatening

Functional Pattern:

  • Overactive threat detection system (amygdala)
  • Underactive regulation system (PFC)
  • Results in chronic, excessive anxiety that cannot be “turned off”

Neurotransmitter Imbalances:

1. GABA (Gamma-Aminobutyric Acid):

  • Primary inhibitory neurotransmitter in brain (calms neural activity)
  • Deficient GABA function in GAD
  • Less inhibition → More anxiety
  • Brain more “revved up”

Evidence:

  • Benzodiazepines (enhance GABA) effective for anxiety
  • Reduced GABA receptor binding in GAD patients
  • Lower GABA levels in some brain regions

2. Serotonin:

  • Involved in mood regulation and anxiety
  • Dysregulated serotonin in GAD
  • Evidence: SSRIs and SNRIs (increase serotonin) effective for GAD

3. Norepinephrine:

  • Stress hormone and neurotransmitter
  • Elevated in GAD
  • Contributes to chronic arousal, vigilance
  • Overactive stress response system

4. Corticotropin-Releasing Factor (CRF):

  • Initiates stress response
  • Elevated CRF in GAD
  • Chronic activation of stress systems

Autonomic Nervous System Dysregulation:

Chronic Sympathetic Activation:

  • Sympathetic nervous system (fight-or-flight) chronically activated
  • Results in: Muscle tension, restlessness, fatigue, sleep disturbances
  • Autonomic rigidity: Difficulty returning to baseline after stress

HPA Axis Dysregulation:

  • Hypothalamic-Pituitary-Adrenal axis: Body’s central stress response system
  • In GAD: May be chronically activated or dysregulated
  • Elevated cortisol (stress hormone) in some studies
  • Chronic stress response

Physiological Vulnerability:

  • Some individuals have inherently more reactive nervous systems
  • Greater physiological response to stressors
  • Slower return to baseline
  • May predispose to GAD

Cognitive Factors (Central to GAD)

Cognitive processes play critical role in GAD; how person thinks about and interprets the world

Core Cognitive Features

1. Intolerance of Uncertainty

Most Important Cognitive Factor in GAD

Definition:

  • Difficulty tolerating ambiguous or uncertain situations
  • Need to know for certain that things will be okay
  • “What if…?” questions dominate thinking

Manifestations:

  • “What if I fail the exam?”
  • “What if my loved one has an accident?”
  • “What if I get sick?”
  • “What if I lose my job?”
  • Cannot accept that future is inherently uncertain

Why It Causes Worry:

  • Try to resolve uncertainty through worry
  • Believe worry will: Prepare for negative outcomes, prevent bad things, lead to solutions
  • But worry never provides certainty (future remains uncertain)
  • Chronic worry is futile attempt to eliminate uncertainty

Behaviors:

  • Excessive checking, reassurance-seeking
  • Avoid situations with uncertain outcomes
  • Over-prepare, over-plan
  • Ruminate excessively on “what ifs”

Research:

  • Strongest cognitive predictor of GAD
  • Higher intolerance of uncertainty in GAD than other anxiety disorders
  • Reducing intolerance of uncertainty → Reduces GAD symptoms

2. Positive Beliefs About Worry (Metacognitive Beliefs)

Paradox: People with GAD believe worry is helpful

Common Beliefs:

  • “Worrying helps me solve problems”
  • “Worrying prepares me for the worst”
  • “If I worry, bad things are less likely to happen” (superstitious/magical thinking)
  • “Worrying shows I’m a responsible person”
  • “Worrying motivates me”
  • “If I don’t worry, something bad will happen”

Why Maintain Worry:

  • If believe worry is helpful, will continue worrying
  • See worry as adaptive strategy
  • Reluctant to give up worry

Reality:

  • Worry is not the same as productive problem-solving
  • Worry is not the same as planning
  • Worry does not prevent negative outcomes
  • Worry is repetitive, unproductive, distressing

3. Negative Beliefs About Worry

Contradictory: Also hold negative beliefs about worry

Common Beliefs:

  • “Worrying is harmful to my health”
  • “Worry is uncontrollable; I can’t stop once I start”
  • “Worrying will drive me crazy”
  • “My worry is abnormal”

Creates Vicious Cycle:

  • Worry about something (Type 1 worry)
  • Then worry about the fact that worrying (Type 2 worry or “meta-worry”)
  • “I’m worrying so much about my health. This worry will make me sick. I can’t control my worry. What’s wrong with me?”
  • Worry about worry perpetuates the problem

4. Negative Problem Orientation

Definition: Negative attitude toward problems

Beliefs:

  • “Problems are threatening”
  • “I can’t handle problems effectively”
  • “When problem arises, it’s a catastrophe”
  • Doubt problem-solving abilities

Consequences:

  • View everyday problems as threatening
  • Feel overwhelmed by problems
  • Worry rather than problem-solve
  • Avoid problems → More worry

Versus Actual Problem-Solving:

  • GAD characterized by worry (repetitive, unproductive)
  • NOT characterized by effective problem-solving (action-oriented, solution-focused)
  • Worry ≠ Problem-solving

5. Cognitive Avoidance

Theory (Borkovec): Worry is form of cognitive avoidance

What Is Avoided: Emotional processing of feared outcomes

How:

  • Worry is primarily verbal-linguistic (words, thoughts)
  • Not imagery-based (vivid mental images)
  • Verbal worry less emotionally activating than mental imagery
  • Worry prevents full emotional processing of fears

Why This Maintains GAD:

  • Worry provides short-term relief from more distressing imagery/emotions
  • But prevents emotional processing that would lead to habituation
  • Never fully confront fears → Fears remain threatening
  • Similar to behavioral avoidance maintaining phobias

Example:

  • Fear loved one will die in accident
  • Worry verbally: “What if they have accident? What would I do? I need to call them.”
  • Avoid vividly imagining the loss and fully feeling the grief
  • Never process and habituate to the fear

Attentional Biases

Hypervigilance to Threat:

  • Constantly scanning environment for potential threats
  • Notice possible dangers others miss
  • Attention automatically drawn to threatening information

Difficulty Disengaging from Threat:

  • Once notice potential threat, hard to shift attention away
  • Ruminate on threat
  • Miss non-threatening information

Interpretation Biases:

  • Ambiguous situations interpreted as threatening
  • “My child is 10 minutes late” → “They must have been in an accident”
  • “My boss wants to meet with me” → “I’m going to be fired”
  • Always expect worst-case scenario

Developmental and Environmental Factors

Childhood Experiences

Early Unpredictability and Uncontrollability:

  • Chaotic, unpredictable childhood environment
  • Never knew what to expect
  • Learned world is dangerous and unpredictable
  • Develops intolerance of uncertainty

Examples:

  • Parent with substance abuse (behavior unpredictable)
  • Family financial instability
  • Frequent moves, changes
  • Parental conflict, divorce

Overprotective or Anxious Parenting:

  • Parents excessively worry and shield child from challenges
  • Transmit message that world is dangerous
  • Child doesn’t learn to cope independently
  • Learns to view normal situations as threatening

Parental Modeling:

  • Parents who are chronic worriers
  • Child learns to worry by observation
  • “Worry is how we handle the world”

Critical or Rejecting Parenting:

  • Excessive criticism, high standards
  • Child develops anxiety about performance, approval
  • Chronic worry about meeting expectations

Childhood Adversity:

  • Trauma, abuse, neglect
  • Loss of parent
  • Serious illness in family
  • Create vulnerability to anxiety disorders

Stressful Life Events

Onset Often Following Stressors:

  • GAD often begins after period of chronic stress
  • Not necessarily single traumatic event (unlike PTSD)
  • Cumulative stress, multiple stressors

Common Triggers:

  • Work stress, job loss
  • Relationship problems, divorce
  • Financial difficulties
  • Health problems (self or loved one)
  • Major life transitions

Chronic Stress:

  • Prolonged stress may dysregulate stress response systems
  • HPA axis, autonomic nervous system
  • May lower threshold for anxiety

Maintaining Factors (Why GAD Persists)

1. Worry Itself (Primary Maintaining Factor):

Worry Is Self-Perpetuating:

  • Worry generates more worry
  • Each worry spawns new “what ifs”
  • Never reaches resolution (can’t prove definitively that feared outcome won’t happen)
  • Uncontrollable quality

Negative Reinforcement:

  • Worry about something (“What if I fail?”)
  • Bad thing doesn’t happen (pass exam)
  • Attributes success to worry: “Because I worried, I was prepared and passed”
  • Strengthens belief that worry is helpful
  • More likely to worry in future
  • But actually: Would have passed anyway; worry was unnecessary

Worry as Avoidance:

  • Worry prevents full emotional engagement with fears
  • Cognitive avoidance maintains anxiety
  • Never fully process and habituate to feared outcomes

2. Avoidance Behaviors:

Even though GAD is about worry (internal), often involves behavioral avoidance:

  • Avoid situations that trigger worry
  • Avoid making decisions (because uncertain outcomes)
  • Procrastinate on tasks (worry about them instead)
  • Delegate decisions to others
  • Avoidance prevents learning situations are manageable

3. Reassurance-Seeking:

Compulsive Reassurance-Seeking:

  • Repeatedly ask others for reassurance (“Will I be okay?” “Do you think this is serious?”)
  • Temporarily reduces anxiety
  • But soon doubt the reassurance → Seek again
  • Never satisfied; can’t eliminate uncertainty
  • Maintains need for reassurance

4. Checking Behaviors:

  • Repeatedly check things to prevent feared outcomes
  • Check locks, appliances, accounts, health symptoms
  • Provides temporary relief but maintains worry

5. Intolerance of Uncertainty:

  • Drives ongoing worry
  • Cannot accept uncertainty → Must keep worrying
  • Worry is attempt to achieve certainty (always fails)

6. Positive Beliefs About Worry:

  • If believe worry is helpful, will continue
  • Maintains worry as strategy

7. Physiological Tension:

  • Chronic muscle tension, arousal
  • Physical discomfort generates more worry
  • “Why am I so tense? What’s wrong with me?”
  • Worry about worry → Vicious cycle

Summary of Causal Model

Diathesis-Stress Model:

Vulnerabilities (Diathesis):

  • Genetic predisposition: 30-40% heritability
  • Neurobiological: Amygdala hyperactivity, GABA deficiency, HPA axis dysregulation
  • Temperament: Behavioral inhibition, neuroticism
  • Cognitive vulnerability: Intolerance of uncertainty, positive beliefs about worry

Environmental Factors (Stress):

  • Childhood experiences: Unpredictable environment, anxious parenting
  • Life stress: Chronic stressors, cumulative life events

Cognitive Factors (Develop from interaction):

  • Intolerance of uncertainty (central)
  • Positive and negative beliefs about worry
  • Negative problem orientation
  • Attentional and interpretation biases

Maintaining Factors (Why Chronic):

  • Worry itself (self-perpetuating, negatively reinforced)
  • Cognitive avoidance through worry
  • Behavioral avoidance, reassurance-seeking
  • Intolerance of uncertainty drives continued worry

Result: Chronic, excessive worry about multiple domains that is difficult to control

Treatment of Generalized Anxiety Disorder

GAD is treatable, though often requires longer treatment than other anxiety disorders due to chronic nature.

Cognitive-Behavioral Therapy (CBT) - First-Line Psychological Treatment

Most Effective Psychological Treatment for GAD

Core Components:

1. Psychoeducation

Understanding GAD:

  • Nature of worry and anxiety
  • Difference between productive problem-solving and unproductive worry
  • Chronic nature of GAD
  • How anxiety maintained (vicious cycles)

Normalizing:

  • Everyone worries sometimes
  • In GAD, worry is excessive, uncontrollable, distressing
  • Treatable condition

Treatment Rationale:

  • Explain components of treatment
  • Why each component important
  • Build motivation and collaboration

2. Self-Monitoring (Early Phase)

Worry Diary:

  • Record worries throughout day/week
  • Note: What worried about, When, Duration, Anxiety level (0-100), Trigger
  • Identify patterns: What triggers worry? What domains (health, finances, relationships, work)?

Purpose:

  • Increase awareness of worry
  • Identify worry triggers
  • Establish baseline
  • Begin to see worry as mental event (not reality)

3. Cognitive Restructuring (Challenging Worry Thoughts)

Goal: Identify and challenge unrealistic, catastrophic thoughts

Process:

Step 1: Identify Worry Thoughts:

  • What specific worry? “I’ll lose my job”
  • What’s feared outcome? “I’ll become homeless and destitute”

Step 2: Examine Evidence:

  • Evidence supporting worry: Any actual evidence? Often little or none
  • Evidence against worry: What suggests this unlikely?
  • Probability: Realistically, how likely? (Usually much lower than feels)

Example (Health Worry):

  • Worry: “I have a headache; I must have brain tumor”
  • Evidence for: Have headache
  • Evidence against: Headaches extremely common; brain tumors extremely rare; have had many headaches before that were nothing; no other symptoms of brain tumor; doctor examined and said fine
  • Realistic probability: Less than 0.01%; almost certainly tension headache or benign
  • Alternative thought: “I have a common headache, probably from stress or tension. Extremely unlikely to be serious.”

Step 3: Decatastrophizing:

  • Downward arrow: Follow worry to worst-case scenario
  • “What if that happened?” → “Then what?” → “Then what?”
  • Often less catastrophic than vaguely feared

Example (Work Worry):

  • Worry: “What if I make mistake at work?”
  • Then what?: “Boss will be angry”
  • Then what?: “Might get bad performance review”
  • Then what?: “Might not get promotion”
  • Then what?: “Would stay in current role, which is actually okay; could look for other opportunities”
  • Realization: Even worst-case scenario is manageable, not catastrophic

Step 4: Coping Questions:

  • “If worst happened, how would I cope?”
  • Recognize own coping resources
  • Realize can handle difficulties (have before)
  • Reduces anxiety about feared outcome

Step 5: Generate Balanced Thoughts:

  • More realistic, balanced perspective
  • Not just positive thinking (must be believable)
  • Incorporates evidence, realistic probabilities, coping ability

Challenging Cognitive Distortions:

  • Catastrophizing: “It will be terrible/unbearable”
  • Probability overestimation: “It’s very likely to happen” (when actually rare)
  • All-or-nothing: “If not perfect, it’s disaster”
  • Fortune-telling: “I know it will go badly”
  • Intolerance of uncertainty: “I must know for certain” → Challenge with acceptance of uncertainty

4. Distinguishing Productive Worry from Unproductive Worry

Key Distinction:

Productive Problem-Solving:

  • Focused on solvable problem in present or near future
  • Action-oriented: Leads to concrete steps to address problem
  • Time-limited: Reach conclusion or decision
  • Reduces anxiety: Feel better after problem-solving

Unproductive Worry:

  • Focused on hypothetical “what ifs” that may never occur
  • Repetitive: Go over same concerns without resolution
  • No action: Just thinking about it; no concrete steps
  • Uncontrollable: Hard to stop once started
  • Increases anxiety: Feel worse after worrying

Examples:

Productive:

  • Concern: “Bills are piling up; money is tight”
  • Problem-solving: Review budget; identify areas to cut expenses; look for additional income sources; make plan
  • Action: Implement budget changes
  • Result: Plan in place; anxiety reduced

Unproductive:

  • Worry: “What if I run out of money? What if I lose my job? What if I can’t pay rent? What if I become homeless?”
  • Process: Ruminate on worst-case scenarios; no concrete plan; just anxious spinning
  • Action: None (paralyzed by worry)
  • Result: More anxious; no progress

Intervention:

  • If problem is solvable and current → Problem-solve
  • If problem is hypothetical or unsolvable → Let go of worry (acceptance strategies)

5. Problem-Solving Training

For Solvable, Current Problems: Teach systematic problem-solving

Steps:

1. Define Problem Clearly:

  • Specific, concrete description
  • “My car needs repair but I don’t have money saved”

2. Generate Possible Solutions:

  • Brainstorm multiple options
  • Don’t evaluate yet (even seemingly imperfect ideas)
  • “Ask family for loan; use credit card; sell some items; take bus temporarily; find side job for extra money”

3. Evaluate Solutions:

  • Pros and cons of each
  • Feasibility

4. Choose Solution:

  • Select best option (not perfect, just best available)

5. Implement:

  • Make plan; take action

6. Evaluate Outcome:

  • Did it work?
  • If not, try different solution

Benefits:

  • Empowering: Learn can handle problems effectively
  • Reduces worry: Taking action more effective than worrying
  • Builds confidence in problem-solving abilities
  • Addresses negative problem orientation

Important:

  • Can only problem-solve solvable, current problems
  • Cannot problem-solve hypothetical future “what ifs”
  • For those, need acceptance strategies

6. Worry Exposure / Imaginal Exposure

Rationale:

  • Worry is cognitive avoidance of emotional processing
  • Need to fully confront feared outcomes emotionally
  • Leads to habituation and reduced anxiety

Process:

Identify Core Feared Outcome:

  • What’s deepest fear underlying worry?
  • Example: “My loved one will die”

Imaginal Exposure:

  • Vividly imagine feared outcome in detail
  • Describe aloud or write out scenario
  • Include: Sensory details (sights, sounds, emotions)
  • Stay with image for extended period (30-45 minutes)
  • Allow anxiety to rise and then naturally decrease

Repeated Exposures:

  • Do same exposure multiple times (different days)
  • Anxiety decreases with repetition (habituation)

Example (Fear of Loved One Dying):

  • Imagine in detail: Receiving phone call with bad news; going to hospital; seeing loved one; funeral; life afterward
  • Fully feel emotions: Grief, fear, sadness
  • Stay with it until anxiety decreases
  • Learn: Can handle thinking about it; anxiety eventually decreases; not as unbearable as thought

Why Effective:

  • Emotional processing: Fully process fear rather than avoiding through verbal worry
  • Habituation: Repeated exposure reduces anxiety
  • Disconfirms belief that imagining worst is unbearable
  • Breaks cycle of cognitive avoidance

Challenging Component:

  • Emotionally difficult
  • Requires therapist guidance
  • But very effective

7. Worry Time / Stimulus Control

Technique: Schedule specific “worry time”

Process:

  • Set aside 15-30 minutes daily at same time as designated “worry time”
  • Location: Same place each day (not bedroom or bed)

Throughout Day:

  • When notice worrying, postpone to worry time
  • “I’ll worry about that at 5pm”
  • Write down worry (so don’t forget) and return attention to present

During Worry Time:

  • Allow self to worry about concerns on list
  • Or problem-solve if solvable
  • Often by worry time, urge to worry has passed

Why Effective:

  • Regain sense of control over worry (not worrying constantly)
  • Reduce worry time: Worry becomes contained
  • Realize many worries resolve on own or seem less urgent later
  • Breaks habitual, automatic worrying

8. Relaxation Training

Rationale: GAD involves chronic physical tension

Techniques:

Progressive Muscle Relaxation (PMR):

  • Systematically tense and relax muscle groups
  • Learn to recognize and release tension
  • Practice daily

Deep Breathing:

  • Slow, diaphragmatic breathing
  • Activates parasympathetic nervous system (calms)
  • Counteracts physiological arousal

Applied Relaxation:

  • Learn to relax quickly in response to early signs of anxiety
  • Practice in increasingly challenging situations

Effectiveness:

  • Reduces physiological symptoms (tension, restlessness)
  • Improves sleep
  • Provides coping tool
  • Not sufficient alone but helpful component

9. Mindfulness and Acceptance Strategies

Mindfulness: Non-judgmental awareness of present moment

For GAD:

  • Worries are about future (what might happen)
  • Mindfulness brings attention to present moment
  • “Right now, in this moment, am I okay?” (Usually yes)

Techniques:

Mindful Observation of Worries:

  • Notice worry arising
  • Observe it as mental event (thought, not reality)
  • “There’s a worry thought”
  • Don’t engage with it or fight it
  • Let it pass (like cloud passing by)

Defusion:

  • Create distance from thoughts
  • “I’m having the thought that I might fail” (rather than “I will fail”)
  • Recognize thought is just thought, not fact

Acceptance of Uncertainty:

  • Practice accepting that future is uncertain
  • “I don’t know what will happen, and that’s okay”
  • Tolerance of uncertainty (rather than trying to eliminate it)

Present-Moment Focus:

  • Engage fully in current activity
  • When mind wanders to worry, gently return to present
  • “Right now, I’m washing dishes; I can feel the warm water”

10. Intolerance of Uncertainty (IU) Interventions

Target: Core maintaining factor in GAD

Goal: Increase tolerance of uncertainty

Strategies:

Psychoeducation About Uncertainty:

  • Uncertainty is inevitable: Cannot know future with certainty; trying to eliminate uncertainty is futile
  • Worry doesn’t provide certainty: Never resolves uncertainty; worry is false solution

Cognitive Restructuring:

  • Challenge beliefs that need certainty
  • “Do I really need to know for certain? Can I tolerate not knowing?”

Behavioral Experiments:

  • Practice tolerating uncertainty in low-stakes situations
  • Examples:
    • Watch movie without reading reviews first (tolerate uncertainty about whether will be good)
    • Try new restaurant (uncertain if will like it)
    • Make minor decision without extensive research
    • Delegate task (uncertain about outcome)
  • Learn can tolerate uncertainty; outcomes usually okay even without perfect information

Reduce Reassurance-Seeking and Checking:

  • Gradually reduce compulsive reassurance-seeking
  • Sit with uncertainty instead
  • Reduces need for certainty

Exposure to Uncertainty:

  • Deliberately choose uncertain situations
  • Practice saying “I don’t know, and that’s okay”

Long-Term Process:

  • Intolerance of uncertainty deeply ingrained
  • Gradual change over time

11. Addressing Positive Beliefs About Worry

Challenge Metacognitive Beliefs (beliefs about worry)

Common Belief: “Worry is helpful; it prepares me”

Interventions:

Cognitive Restructuring:

  • Examine evidence: “Has worry actually helped? Has anything I worried about been prevented by worrying?”
  • Distinguish worry from problem-solving: Worry ≠ Preparation
  • Alternative: “Problem-solving is helpful; worry is not”

Behavioral Experiments:

  • Worry-free experiment: Choose specific domain; agree not to worry about it for a week
  • See what happens: Does catastrophe occur? (Usually no)
  • Learns: Bad things don’t happen just because didn’t worry

Cost-Benefit Analysis:

  • List costs of worry (anxiety, time, interference) and benefits (usually few genuine benefits)
  • Realize costs far outweigh benefits

Acceptance and Commitment Therapy (ACT)

Alternative/Complementary Approach: Growing evidence for GAD

Core Components:

Acceptance:

  • Accept presence of anxious thoughts and feelings
  • Don’t fight or suppress them (increases struggle)
  • “Yes, I feel anxious; that’s okay”

Cognitive Defusion:

  • Change relationship with thoughts
  • See thoughts as just thoughts (not facts, not commands)
  • “I’m having the thought that something bad will happen” (distance from thought)

Present Moment:

  • Practice mindfulness
  • Worry is about future; stay in present
  • “Right now, I’m okay”

Values Clarification:

  • Identify what truly matters (relationships, career, hobbies, health, etc.)
  • What kind of life want to live?

Committed Action:

  • Take action consistent with values despite anxiety
  • Live meaningful life even with presence of anxiety
  • Willing to feel anxious in service of valued goals

Example:

  • Value: Close family relationships
  • Anxiety: Worry about family members’ safety
  • Committed action: Engage in relationships fully despite worry (don’t let worry prevent connection)
  • Accept: Worry may be present; can still live according to values

Effectiveness: Evidence shows ACT effective for GAD

Medications

Effective for GAD; often used, especially for moderate-severe GAD

First-Line Medications: SSRIs and SNRIs

Selective Serotonin Reuptake Inhibitors (SSRIs):

  • Increase serotonin in brain
  • First-line pharmacological treatment

Commonly Prescribed:

  • Escitalopram (Lexapro)
  • Paroxetine (Paxil) - FDA-approved for GAD
  • Sertraline (Zoloft)
  • Fluoxetine (Prozac)

Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs):

  • Increase serotonin and norepinephrine
  • Also first-line

Commonly Prescribed:

  • Venlafaxine (Effexor XR) - FDA-approved for GAD
  • Duloxetine (Cymbalta) - FDA-approved for GAD

Effectiveness:

  • 60-70% response rate (significant improvement)
  • Reduce worry, anxiety, physical symptoms (tension, sleep problems)
  • Improve functioning

Timeline:

  • Takes 4-6 weeks to see initial benefits
  • Full effects 8-12 weeks
  • Must take consistently (daily)

Duration:

  • Typically 6-12 months after achieving improvement
  • GAD is chronic; often need longer-term treatment
  • Many patients stay on medication for years

Side Effects:

  • Nausea, headache, drowsiness or insomnia, sexual dysfunction, weight gain
  • Usually mild and decrease over time

Discontinuation:

  • Must taper gradually (not stop abruptly)
  • Abrupt discontinuation causes withdrawal symptoms

Benzodiazepines

Examples: Clonazepam (Klonopin), Lorazepam (Ativan), Alprazolam (Xanax), Diazepam (Valium)

Effects:

  • Enhance GABA (inhibitory neurotransmitter)
  • Fast-acting (work within 30-60 minutes)
  • Immediately reduce anxiety

Effectiveness:

  • Very effective at reducing acute anxiety

When Used:

  • Short-term (while waiting for SSRI/SNRI to take effect)
  • Severe acute anxiety that needs immediate relief
  • Sometimes long-term, but controversial

Problems with Long-Term Use:

  • Dependence and withdrawal: Body becomes dependent; withdrawal very difficult
  • Tolerance: Need increasing doses over time
  • Cognitive impairment: Memory, concentration problems
  • Sedation: Drowsiness, impaired functioning
  • Rebound anxiety: When wear off, anxiety returns worse

Guidelines:

  • Prefer SSRIs/SNRIs for long-term
  • Benzodiazepines for short-term only when possible
  • If used long-term, regular monitoring

Discontinuation:

  • Must taper very gradually (can’t stop abruptly)
  • Abrupt discontinuation causes severe withdrawal (seizures possible)
  • Taper over weeks to months

Buspirone

Buspirone (BuSpar):

  • Azapirone (different class)
  • Affects serotonin receptors

Advantages:

  • No dependence or withdrawal
  • Not sedating
  • No cognitive impairment
  • Safe

Effectiveness:

  • Moderately effective for GAD
  • Less effective than SSRIs/SNRIs for many patients
  • But some people respond well

Timeline:

  • Like SSRIs, takes 2-4 weeks to work

When Used:

  • Alternative if SSRIs/SNRIs not tolerated
  • Add-on to SSRI/SNRI for partial responders
  • Prefer to benzodiazepines (no dependence risk)

Other Medications

Pregabalin (Lyrica):

  • Anticonvulsant; affects GABA
  • Effective for GAD in some countries (not FDA-approved for GAD in U.S.)
  • May cause sedation, dizziness

Hydroxyzine (Vistaril):

  • Antihistamine with anti-anxiety properties
  • Fast-acting
  • Non-addictive
  • May help short-term or as-needed

Tricyclic Antidepressants (e.g., Imipramine):

  • Older antidepressants
  • Can be effective for GAD
  • More side effects than SSRIs
  • Not first-line

Combined Treatment: CBT + Medication

Often Most Effective: Combining CBT with medication

Advantages:

  • Medication reduces symptoms enough to engage in therapy
  • Faster initial relief
  • CBT provides coping skills
  • Combined may have better outcomes than either alone

Long-Term:

  • CBT provides lasting skills
  • After CBT and stabilization, may be able to taper medication
  • Or continue both for maintenance
  • Relapse lower with CBT than medication alone

Other Approaches

Applied Relaxation:

  • Systematic relaxation training
  • Some evidence as standalone treatment
  • Learn to quickly induce relaxation in anxiety-provoking situations

Metacognitive Therapy (MCT):

  • Focus on changing beliefs about worry and thinking processes
  • Challenge positive and negative beliefs about worry
  • Stop worry and rumination as strategies
  • Some evidence of effectiveness

Interpersonal Therapy (IPT):

  • Focus on relationship problems
  • Less evidence for GAD than depression
  • May help if GAD related to interpersonal stressors

Self-Help and Lifestyle

Self-Help Books:

  • CBT-based workbooks
  • Can be effective, especially with therapist support

Lifestyle Modifications:

  • Regular exercise: Reduces anxiety significantly
  • Adequate sleep: Poor sleep worsens worry and anxiety
  • Limit caffeine: Increases physiological arousal
  • Avoid alcohol: May use to self-medicate but worsens anxiety long-term
  • Healthy diet: May affect mood and energy

Stress Management:

  • Time management
  • Balance work and leisure
  • Social support

Support Groups:

  • Peer support
  • Share experiences and coping strategies

Treatment Effectiveness and Outcomes

CBT for GAD:

  • Response rates: 50-60% show significant improvement
  • Some evidence lower than other anxiety disorders (GAD more chronic, harder to treat)
  • But still effective
  • Effects maintained over time

Medications (SSRIs/SNRIs):

  • Response rates: 60-70%
  • Effective but often need continued treatment
  • High relapse when discontinued (70-80% relapse within year if stop)

Combined Treatment:

  • Often most effective
  • Better outcomes than either alone for many patients

Challenges:

  • GAD is chronic disorder: Often requires longer treatment
  • May need maintenance treatment (ongoing therapy or medication)
  • Some patients have partial response (improve but don’t fully remit)
  • Comorbidity (often depression, other anxiety) complicates treatment

Predictors of Good Outcome:

  • Treatment adherence: Completing full course; doing homework
  • Lower initial severity
  • No comorbid depression
  • Early improvement: Early responders tend to maintain gains
  • Addressing intolerance of uncertainty directly

Key Points for Exams

Causes:

  • Biological: Genetics (30-40% heritability; family risk 6x higher), amygdala hyperactivity, GABA deficiency, serotonin/norepinephrine dysregulation, HPA axis dysregulation
  • Cognitive (central): Intolerance of uncertainty (most important), positive and negative beliefs about worry, negative problem orientation, cognitive avoidance through worry, attentional biases
  • Developmental: Unpredictable childhood environment, anxious/overprotective parenting, parental modeling, childhood adversity
  • Precipitating: Chronic stress, cumulative life stressors
  • Maintaining factors: Worry itself (self-perpetuating, negatively reinforced), cognitive avoidance, behavioral avoidance, reassurance-seeking, intolerance of uncertainty, positive beliefs about worry

Intolerance of Uncertainty: Strongest cognitive predictor; difficulty tolerating ambiguous situations

Worry as Cognitive Avoidance: Worry prevents full emotional processing

Treatment:

  • CBT gold standard: Most effective psychological treatment
  • Core CBT components: Psychoeducation, self-monitoring, cognitive restructuring (challenging catastrophic thoughts, decatastrophizing), distinguishing productive vs unproductive worry, problem-solving training, worry exposure (imaginal exposure to feared outcomes), worry time (stimulus control), relaxation training, mindfulness/acceptance, intolerance of uncertainty interventions, challenging positive beliefs about worry
  • Worry exposure: Vividly imagine feared outcomes to allow emotional processing and habituation
  • ACT: Effective alternative; acceptance, defusion, values, committed action
  • Medications: SSRIs/SNRIs first-line (effective; 60-70% response); benzodiazepines short-term only (dependence risk); buspirone alternative (no dependence)
  • Combined treatment: Often most effective (CBT + medication)
  • Outcomes: CBT 50-60% response; SSRIs/SNRIs 60-70% response; high relapse when medication discontinued; GAD chronic and challenging to treat but treatable
  • Treatment length: Often longer than other anxiety disorders due to chronic nature