Anxiety Disorders

Psychopathology: Anxiety and Stressor-Related Problems

Overview of Anxiety and Related Disorders

  • Anxiety disorders are severe conditions that cause excessive feelings of apprehension, uncertainty, and fear.

  • The major types of anxiety disorders include:

    • Specific phobias

    • Social anxiety disorder

    • Panic disorder (with and without agoraphobia)

    • Generalized anxiety disorder (GAD)

    • Obsessive-compulsive disorder (OCD)

    • Trauma & stress-related disorders

Nature of Anxiety, Fear, and Panic

  • Anxiety

    • An excessive or aroused state characterized by feelings of apprehension and uncertainty without clear triggers.

    • The individual may feel unable to relax and exhibit physical symptoms like muscle tension and adrenaline rushes.

  • Fear

    • An emotional response to perceived threats, often characterized by panic attacks and significant anxiety.

    • Symptoms include shortness of breath, chest pain, and inner tension.

  • Panic Attack

    • An intense fear or discomfort that peaks within minutes, accompanied by multiple physical symptoms (e.g., heart palpitations, dizziness, trembling).

  • Mixed Anxiety and Depressive Disorder

    • Indicates co-occurring symptoms of anxiety and depression.

Symptoms of Anxiety Disorders

  • Common symptoms and manifestations include:

    • Fear of specific situations:

      • Fear of snakes, blood, flying on a plane, elevators, or public toilets.

    • Obsessions in OCD:

      • Intrusive thoughts of violence, sex, or contamination.

    • Compulsions:

      • Repetitive behaviors performed to reduce anxiety (e.g., checking, washing).

    • Social Phobia:

      • Fear of excessive embarrassment or scrutiny in social situations, causing avoidance of public speaking and other interactions.

    • Post-traumatic Stress Disorder (PTSD):

      • Symptoms include reliving trauma through nightmares and emotional distress.

Common Characteristics of Anxiety Disorders

  • Physiological symptoms like panic attacks combined with a bias towards attending to negative information.

  • Associated dysfunctional beliefs and often linked to specific early experiences like childhood abuse.

  • Many anxiety disorders exhibit a comorbid cycle with other mental health conditions, leading to complexities in diagnosis and treatment.

Biological Contributions to Anxiety Disorders

  • Anxiety disorders are influenced by biological factors, including:

    • Physiological vulnerability: Genetic predispositions contribute to the risk of anxiety disorders.

    • Hormonal influences: The role of Corticotropin-releasing factor (CRF) in stress responses.

    • Neurotransmitter systems:

    • GABA: Calming neurotransmitter that helps with anxiety regulation.

    • Serotonin: Regulates mood, anxiety, and happiness; dysregulation linked to anxiety disorders.

    • Noradrenergic systems: Involved in the fight or flight response.

    • The HPA Axis: Involves hypothalamic, pituitary, and adrenal gland interactions that affect stress responses.

The Structures of Neurotransmitters

  • Adrenaline: Increases heart rate; associated with the fight or flight response.

  • Noradrenaline: Affects concentration; elevation during stress.

  • Dopamine: Related to pleasure and motivation.

  • Serotonin: Central to mood regulation and anxiety levels.

  • GABA: Induces calmness and counteracts anxiety; low levels can exacerbate anxiety disorders.

  • Glutamate: A neurotransmitter involved in excitatory signals in the brain.

HPA Axis and Its Function in Stress Responses

  • The HPA axis is activated during stress and involves:

    • Corticotropin-Releasing Hormone (CRH) release from the hypothalamus.

    • Activation of the Pituitary Gland, releasing Adrenocorticotropic Hormone (ACTH).

    • Stimulation of the Adrenal Glands to release stress hormones (cortisol, adrenaline).

Integrated Model of Anxiety Disorders

  • Triple Vulnerability Model:

    • Generalized biological vulnerability (heritable traits).

    • Generalized psychological vulnerability (specific beliefs and perceptions).

    • Specific psychological vulnerability (early life experiences).

Specific Phobias

  • Defined as an excessive, persistent fear of a specific object or situation, leading to avoidance behaviors.

    • Symptoms include immediate fear responses (crying, tantrums in children) upon exposure.

    • Classified byDSM-5 criteria as:

    • A: Anxiety provoked by specific objects/situations.

    • B: Avoidance or marked anxiety upon encountering phobic stimuli.

    • C: Symptoms are persistent and out of proportion.

  • Lifetime prevalence rates of common phobias include:

    • Social phobia: 3.2%

    • Blood-injury-injection phobia: 3.5%

    • Animal phobias: 1.1% to 4.7%.

Etiology of Specific Phobias

  • Causes explored through:

    • Psychoanalytic: Historical perspectives on phobias (e.g., Freud's Little Hans).

    • Classical Conditioning: Learning through traumatic experiences.

    • Biological Accounts: Evolutionary predispositions leading to certain fears.

  • Problems with Conditioning Accounts: Some phobias develop without identifiable traumatic events.

Anxiety Disorders: Comorbidity and Interactions

  • Panic disorder has strong comorbidity with situational phobias, with shared symptoms and stress responses.

  • Contributions of genetic, environmental, and social factors are essential to understanding these interactions.

Treatment of Anxiety Disorders

  • Treatment options vary across anxiety disorders, commonly encompassing:

    • Exposure therapies such as systematic desensitization and flooding.

    • Cognitive Behavioral Therapy (CBT) targeting dysfunctional beliefs and behaviors.

    • Pharmacotherapy: including SSRIs, SNRIs, and benzodiazepines.

    • Coping strategies including relaxation techniques, acceptance, and mindfulness.

Social Anxiety Disorder

  • Characterized by an intense fear of social situations due to fear of negative evaluation.

  • DSM-5 Diagnostic Criteria include:

    • Marked fear/anxiety tied to social interactions or being observed.

    • The fear is out of proportion and leads to avoidance behaviors.

Panic Disorder and Agoraphobia

  • Panic disorder defines repeated panic attacks followed by a month of concern about subsequent attacks and maladaptive changes.

  • DSM-5 Criteria specify:

    • Recurrent and unexpected panic attacks.

    • Avoidance behaviors in response to fear of future attacks.

    • Symptoms must persist beyond one month and significantly impair functioning.

Generalized Anxiety Disorder (GAD)

  • Symptoms are persistent and include excessive worry about multiple life domains.

    • Worrying is perceived as uncontrollable, leading to physical anxiety symptoms.

  • DSM-5 Criteria include:

    • Excessive anxiety/worry affecting daily functioning for more than 3 months.

Treatment Options for GAD

  • Typically include CBT focusing on cognitive restructuring and coping strategies.

  • Medications often use SSRIs or SNRIs for symptom relief.

PTSD and Trauma-Related Disorders

  • PTSD: Affects individuals who have experienced extreme trauma, characterized by four symptom categories:

    • Intrusive symptoms (e.g., memories, flashbacks).

    • Avoidance of trauma-related stimuli.

    • Negative alterations in cognition and mood.

    • Alterations in arousal and reactivity (e.g., hypervigilance).

  • Treatment Options: Include exposure therapies, cognitive restructuring, and psychological debriefing.

Summary of Pharmacotherapy

  • The pharmacological management includes various drug classes tailored to specific anxiety disorders, detailing side effects, benefits, and treatment protocols.

    • SSRIs and SNRIs are commonly employed for their efficacy in treating GAD, OCD, and PTSD. Long-term outcomes often show high relapse rates upon discontinuation.

    • Targeted drug classes include SSRIs, SNRIs, and benzodiazepines.

    • Commonly prescribed medications include:

      SSRIs: E.g. Fluoxetine (Prozac), Sertraline (Zoloft)

      Benzodiazepines: E.g. Alprazolam (Xanax), Diazepam (Valium)

Conclusion

  • Anxiety and stressor-related disorders present significant challenges impacting daily functioning and requiring multifaceted treatment approaches. Awareness and understanding of symptoms, alongside evidence-based therapies, are crucial for effective management and recovery in affected individuals.