Comprehensive Study Notes: Anxiety, Obsessive-Compulsive, Somatic, Dissociative, Trauma, and Psychophysiological Disorders

Anxiety Disorders and the Multipath Perspective

• Overview and Epidemological Data

  • Anxiety disorders are the most prevalent mental health conditions in the United States.

  • Prior to the COVID-19 pandemic, the past-year prevalence for anxiety disorders in the U.S. was $23\%$ for women and $14.3\%$ for men.

  • In a given year, approximately $63\text{ million}$ adults ($19.1\%$ of the adult population) experience an anxiety disorder.

  • Anxiety vs. Anxiety Disorder:

  • Anxiety: Produces internal tension, worry, and physiological reactivity.

  • Anxiety Disorder: Involves unfounded fear, clinically significant distress, and symptoms that impair daily functioning.

  • Single etiological models cannot account for the wide variability in individual responses to fearful situations.

• The Multipath Model Framework

  • Biological Dimension: Overactive fear circuitry in the brain, 5-HTTLPR genotype variations, neurotransmitter abnormalities.

  • Psychological Dimension: Negative cognitive appraisal, anxiety sensitivity, limited sense of control.

  • Social Dimension: Daily environmental stress, lack of social support, stressful relationships, traumatic life events.

  • Sociocultural Dimension: Poverty, female gender roles, cultural norms, acculturation conflicts, discrimination and prejudice.

• Biological Dimension Details

  • Differential Diagnosis: Physiological causes of anxiety symptoms must be ruled out before establishing a primary anxiety disorder. These include medication side effects, excessive caffeine intake, hyperthyroidism, cardiac arrhythmias, and alcohol withdrawal.

  • Fear Circuitry in the Brain:

  • Amygdala: Triggers states of fear or anxiety. Activates the Hypothalamic-Pituitary-Adrenal (HPA) axis, initiating a "fight-or-flight" or "freeze" response where primitive survival mechanisms override rational thinking.

  • Sensory Signal Pathways: Sensory inputs travel to the hippocampus and prefrontal cortex (PFC) to evaluate danger. Higher-level mental processing in the PFC can send inhibitory signals to stop the HPA response.

  • Neurotransmitter Dysfunction: Anxiety and fear are associated with reduced Gamma-Aminobutyric Acid (GABA) activity. GABA is an inhibitory neurotransmitter that decreases neural communication; lower GABA activity leads to reduced inhibition of fear responses.

• Treatment Effects on Neural Circuits:

  • Medication: Directly decreases activity in the amygdala, normalizing anxiety reactions.

  • Psychotherapy: Reduces physiological arousal by strengthening distress tolerance and enhancing the ability of the prefrontal cortex to inhibit fear responses. Psychotherapy also enhances functional connectivity between the amygdala and prefrontal cortex.

• Genetics and Gene-Environment Interaction:

  • Genes modestly contribute to anxiety disorders, showing maximum influence when interacting with environmental stressors.

  • Serotonin Transporter Gene (5-HTTLPR): Short alleles are associated with reduced serotonin activity and increased anxiety-related behaviors. Long alleles appear to confer protective effects against stress exposure.

  • Environmental Interplay: Gene expression is contingent on environmental context. For instance, Chinese children carrying two short alleles demonstrated greater confidence in social interactions under supportive environmental conditions.

  • Psychological Dimension Details

• Anxiety Sensitivity: A tendency to interpret physiological bodily changes as signs of impending danger (e.g., heightened anxious arousal in Latinx college students adjusting to university life).

• Negative Appraisal: A habit of interpreting neutral or ambiguous events as threatening.

• Reappraisal Skill: The cognitive capacity to reframe situations from multiple perspectives to minimize negative emotional responses.

• Sense of Mastery/Control: High perceived self-control reduces susceptibility to anxiety.

  • Social and Sociocultural Dimension Details

• Environmental Stressors: Poverty, adverse working conditions, traumatic events, and limited social support exacerbate biological or psychological vulnerabilities.

• Gender Differences: Women experience anxiety disorders significantly more often than men.

• Cultural Manifestations:

  • Exposure to discrimination, prejudice, and internalized racism increases anxiety symptoms.

  • Western Cultures: Social anxiety centers on fear of embarrassing oneself.

  • Asian Cultures: Social anxiety frequently centers on fear of offending others.

  • Epidemiological Summary of Anxiety Disorders

• Social Anxiety Disorder: Twice as common in females; median age of onset is mid-teens.

• Specific Phobia: 12-month prevalence ranges from $7\%$ to $9\%$; onset is typically in childhood or early adolescence.

• Agoraphobia: 12-month prevalence is up to $1.7\%$; onset is usually late adolescence, with two-thirds of cases developing before age $35$.

• Panic Disorder: 12-month prevalence is $2.7\%$; onset is late adolescence and early adulthood.

• Generalized Anxiety Disorder (GAD): 12-month prevalence ranges from $1.2\%$ to $2.9\%$; median age of diagnosis is approximately $30$, though symptom onset often occurs earlier.

Phobias

• Definition and Core Features

  • A phobia is a strong, persistent, unwarranted fear of a specific object or situation.

  • Exposure to the phobic stimulus triggers extreme anxiety or panic.

  • Adults typically recognize that the fear is excessive, whereas children may lack this awareness.

  • Symptoms must be present for at least $6\,\text{months}$ for diagnosis.

  • Categories include Social Anxiety Disorder (SAD), Specific Phobia, and Agoraphobia.

• Social Anxiety Disorder (SAD)

  • Characterized by an intense fear of being scrutinized, criticized, or acting in an embarrassing or humiliating manner in the presence of others.

  • The fear is disproportionate to the situation and leads to avoidance or endurance under severe distress.

  • Females are twice as likely as males to be diagnosed.

  • Highly comorbid with Major Depressive Disorder, substance-use disorders, and suicidal ideation or attempts.

  • Sociocultural Dynamics: In collectivistic cultures, individual behavior reflects on the entire family. Practices like using shame for parental control or strict adherence to moral codes can intensify SAD. In Japan and Korea, this may manifest as Taijin Kyofusho (fear of offending or pleasing others through bodily functions or appearance).

• Specific Phobias and Terminology

  • Marked by extreme fear of a specific object or stimulus, exposure to which almost invariably precipitates panic or intense anxiety.

  • Primary Categories:

  • Living Creatures: Spiders, dogs, insects.

  • Environmental Conditions: Heights, storms, water.

  • Blood / Injection / Injury: Needles, invasive medical procedures, blood draw.

  • Situational Factors: Flying, enclosed spaces, driving.

  • Phobia Classifications:

  • Acrophobia: Heights

  • Ailurophobia: Cats

  • Hematophobia: Blood

  • Microphobia: Germs

  • Trypophobia: Holes or irregular clusters of holes

  • Astrapophobia: Storms, thunder, lightning

  • Pyrophobia: Fire

  • Xenophobia: Strangers

  • Case Illustration (Spider Specific Phobia): An individual encountering a spider inside her home experiences shaking, nausea, and an immediate urge to flee across the street to get a neighbor. Following the incident, she engages in obsessive checking behaviors (e.g., inspecting bedsheets 10 times) and avoids walking to the bathroom at night despite physical discomfort.

• Agoraphobia

  • Marked, intense fear of at least two of the following five situations:

  1. Being outside of the home alone

  2. Traveling via public transportation

  3. Being in open spaces

  4. Being in enclosed stores or theaters

  5. Standing in line or being in a crowd

  • Fear stems from thoughts that escape might be difficult or help unavailable during panic-like symptoms. Severe cases result in individuals becoming completely housebound.

• Etiology of Phobias

  • Biological Dimension:

  • Moderate genetic contribution across all subtypes.

  • Exaggerated HPA axis reactivity.

  • Preparedness Theory: Evolutionary predisposition to develop fears of stimuli that historically threatened human survival (e.g., snakes, heights, dark).

  • Psychological Dimension:

  • Classical conditioning (pairing neutral stimulus with a traumatic event).

  • Observational learning or modeling.

  • Exposure to negative information.

  • Cognitive-behavioral factors: Catastrophic thinking and cognitive distortions.

  • Social Dimension:

  • Overprotective parenting and lack of support for independence.

  • Punitive maternal parenting styles and negative family interaction patterns.

  • Peer victimization, ongoing ostracism, and childhood bullying.

  • Sociocultural Dimension:

  • Higher prevalence in females, potentially tied to stronger disgust responses to specific stimuli.

  • Socialization norms permitting females to express fear while encouraging males to suppress it.

• Treatment of Phobias

  • Biological Treatments:

  • Selective Serotonin Reuptake Inhibitors (SSRIs): First-line medication for chronic anxiety and SAD.

  • SNRIs, MAOIs, and Beta-blockers: Used to control autonomic arousal.

  • Benzodiazepines (e.g., Ativan, Xanax, Valium): Enhance GABA activity. Risks include physical dependency, cognitive deterioration, and fall-related injuries in older adults.

  • Cognitive-Behavioral Treatments:

  • Exposure Therapy: Gradual, systematic exposure to feared stimuli.

  • Applied Tension: Technique used for blood-injection-injury phobia to counteract vasovagal syncope (drop in blood pressure and fainting) by tensing arm, leg, and chest muscles until facial warmth is felt, repeating in cycles to stabilize blood pressure.

    • Case Study (Mr. A): Presented with faintness and physiological distress when discussing or seeing blood, injections, or surgery. Applied tension training enabled him to successfully watch videos of thoracic surgery and undergo blood draws without fainting.

  • Systematic Desensitization: Combines exposure with deep muscle relaxation.

  • Cognitive Restructuring: Identifying and disputing irrational, catastrophic thoughts.

  • Modeling Therapy: Watching a model demonstrate non-fearful interactions with the phobic stimulus.

Panic Disorder

• Clinical Presentation and Diagnostic Criteria

  • Marked by recurrent, unexpected panic attacks accompanied by at least $1\,\text{month}$ of persistent apprehension about experiencing subsequent attacks or maladaptive behavior changes designed to avoid them.

  • Frequently co-occurs with agoraphobia.

  • U.S. past-year prevalence is $2.7\%$, with females diagnosed twice as often as males.

  • Prevalence is higher in high-income countries than in low-income countries.

  • Cross-Cultural Symptom Variations:

  • Caucasians: Predominantly cardiac and respiratory distress.

  • Cambodian Refugees: Somatic complaints and panic-induced paralysis.

  • African Americans: Numbing sensations in extremities and intense fear of dying.

  • Native Americans: Heart palpitations, dizziness, and altered perceptions of time.

• Etiology of Panic Disorder

  • Biological Dimension:

  • Heritability estimated between $30\%$ and $40\%$.

  • Decreased availability of GABA and serotonin.

  • Hypersensitivity in brain neural networks responsible for monitoring respiratory function and carbon dioxide ($CO_2$) levels.

  • Psychological Dimension:

  • Heightened fear sensitivity to internal bodily sensations (interoceptive conditioning).

  • Cognitive Cascade: Internal/external stressors lead to unpleasant bodily sensations (palpitations, dyspnea, dizziness), which are catastrophically misinterpreted ("I am dying," "I am losing control"). This increases bodily arousal, forming a self-reinforcing feedback loop.

• Social and Sociocultural Dimensions:

  • Childhood stressors including separation anxiety, family conflict, loss of a loved one, or parental rejection.

  • Exposure to racial or ethnic discrimination and peer victimization.

  • Treatment of Panic Disorder

• Biological Interventions:

  • SSRIs, Tricyclic Antidepressants, and Benzodiazepines.

  • Limitations: Approximately $45\%$ of patients do not respond to medication, and relapse rates are high following drug discontinuation.

• Cognitive-Behavioral Therapy (CBT):

  • Steps include psychoeducation, cognitive restructuring of catastrophic misinterpretations, interoceptive exposure (self-inducing physiological symptoms like hyperventilation to extinguish conditioned fear), real-world exposure, and relapse prevention.

Generalized Anxiety Disorder (GAD)

• Clinical Features

  • Characterized by persistent, pervasive, excessive, and hard-to-control worry regarding multiple life circumstances.

  • Symptoms must occur on the majority of days for at least $6\,\text{months}$ and cause clinically significant functional impairment.

  • U.S. adult prevalence is $2.7\%$, with an adolescent lifetime prevalence of $2.2\%$.

  • Women and girls are nearly twice as likely as men and boys to receive a diagnosis.

• Etiology of GAD

  • Biological Dimension:

  • Modest heritability factor ($31\%$).

  • Abnormalities in serotonin or GABA systems; HPA axis overactivity.

  • Disruptions in limbic system and prefrontal cortex regulation.

  • Psychological Dimension:

  • Dysfunctional cognitive processing, including interpretation bias, automatic attentional bias toward threat, and impaired attentional control.

  • Metacognition: "Worrying about worrying."

  • Case Illustration (Jake, age 6): Experienced persistent, uncontrolled fears of accidentally injuring friends, leaving a toy in a car to melt, birds crashing through windows, hammock collapses, and bully attacks. His symptoms caused sleep disturbances, exhaustion, and constant reassurance-seeking.

  • Social and Sociocultural Dimensions:

  • Anxious, unengaged, or nonresponsive parenting.

  • Environmental stressors: Poverty, poor housing, systemic racism, peer victimization, marital dissolution (widowed, divorced, separated).

  • Prevalence is elevated among low-income individuals, African Americans, and Latinx Americans.

• Treatment of GAD

  • Pharmacotherapy: Benzodiazepines (risk of dependence) and Antidepressants (preferred long-term).

  • Psychotherapy:

  • CBT achieves significant symptom reduction in $60\%$ of patients, with gains maintained at $12\,\text{months}$ post-treatment.

  • Mindfulness-Based CBT: Teaches nonjudgmental awareness of somatic anxiety and thoughts to reduce reactive cognitive cycles.

Obsessive-Compulsive and Related Disorders

• Obsessive-Compulsive Disorder (OCD)

  • Characterized by intrusive, persistent, anxiety-provoking thoughts, impulses, or images (obsessions) and repetitive, ritualistic physical or mental acts performed to neutralize that anxiety (compulsions).

  • Prevalent in boys during childhood; higher prevalence in women during adolescence and adulthood.

  • Common Obsessions:

  • Contamination ($38\%$)

  • Harm ($24\%$)

  • Exactness / Symmetry ($10\%$)

  • Common Compulsions:

  • Checking ($28\%$)

  • Cleaning / Washing ($27\%$)

  • Repeating ($11\%$)

• Related Disorders

  • Hoarding Disorder: Persistent difficulty discarding or parting with possessions regardless of value, leading to severe clutter, space congestion, and functional impairment. Adult prevalence is $2\%$ to $6\%$, beginning in late adolescence and peaking in older females.

  • Body Dysmorphic Disorder (BDD): Distressing preoccupation with perceived physical flaws unnoticeable to others, accompanied by repetitive behaviors (checking mirrors, grooming). Up to $60\%$ seek cosmetic surgery. Includes muscle dysmorphia (preoccupation with body size/muscularity).

  • Trichotillomania (Hair-Pulling Disorder): Recurrent pulling of one's hair despite repeated attempts to stop. Prevalence is $4\%$, with females $4\times$ to $10\times$ more likely to be affected.

  • Excoriation (Skin-Picking Disorder): Recurrent picking resulting in skin lesions, severe distress, and functional impairment despite efforts to quit.

• Etiology of OCD

  • Biological Dimension:

  • Genetic heritability interacting with nonshared environmental influences.

  • Endophenotypic markers: Impairments in planning, decision-making, and mental flexibility; reduced parietal lobe volume.

  • Hyperactivity in the Cortico-Striato-Thalamo-Cortical (CSTC) pathway and dysregulation of the orbitofrontal-caudate circuit.

  • Psychological Dimension:

  • Behavioral perspective: Compulsions are negatively reinforced by anxiety reduction.

  • Cognitive distortions: Exaggerated risk assessments, intolerance of uncertainty, compulsion for absolute control, thought-action fusion (believing thinking a bad act is equivalent to doing it), and disconfirmatory bias (seeking evidence that a ritual was failed).

  • Social and Sociocultural Dimensions:

  • Overprotective, critical, or controlling parenting styles with low warmth.

  • On rare occasions, living with an affected family member leads to shared psychopathology.

• Treatment of OCD and Related Disorders

  • Pharmacotherapy: SSRIs (effective in approximately $60\%$ of cases; combination with behavioral therapy yields optimal results).

  • Somatic Interventions: Deep Brain Stimulation (DBS) for refractory cases.

  • Psychotherapy:

  • Exposure and Response Prevention (ERP): Gradual or flooded exposure to anxiety-provoking obsessions while strictly refraining from compulsions.

  • Cognitive-Behavioral Interventions induce neuroplasticity, restoring functional neural connectivity.

• Contemporary Trends: The Unified Protocol (UP)

  • Emerging trend toward transdiagnostic treatment protocols, such as the Unified Protocol (UP).

  • Because anxiety and OCD spectrum conditions share common underlying biological vulnerabilities, cognitive distortions, and social etiology, transdiagnostic approaches systematically target core emotional dysregulation mechanisms across disorders.

Somatic Symptom and Related Disorders

• Overview

  • Characterized by prominent bodily symptoms accompanied by significant distress and functional impairment.

  • Actual physical illness may or may not be present.

  • Diagnostic criteria focus on the individual's excessive, disproportionate thoughts, feelings, and behaviors regarding physical symptoms.

• Diagnostic Categories

  • Somatic Symptom Disorder (SSD):

  • At least one distressing physical symptom present for at least $6\,\text{months}$, accompanied by disproportionate, persistent thoughts about symptom seriousness, high health anxiety, or excessive time and energy devoted to healthcare.

  • In $10\%$ of cases, symptoms represent early signs of an emerging medical condition.

  • Higher prevalence in women, African Americans, and individuals with lower socioeconomic status.

  • Severe adolescent SSD correlates with elevated lifetime suicide attempt rates.

  • SSD with Predominant Pain: Pain is the central symptom. African Americans disproportionately experience severe functional impairment from chronic pain, linked to racial discrimination and economic stressors.

  • Illness Anxiety Disorder:

  • Preoccupation with having or acquiring a serious, undiagnosed medical illness for at least $6\,\text{months}$.

  • Somatic symptoms are minimal or absent.

  • Displays high health anxiety, body preoccupation, disease conviction (belief in illness unswayed by medical evaluations), or disease fear.

  • Gender distribution is equal. Cyberchondria (excessive, anxiety-inducing online health searches) exacerbates the condition.

  • Conversion Disorder (Functional Neurological Symptom Disorder):

  • Motor, sensory, or seizure-like symptoms that are demonstrably incompatible with recognized neurological or medical conditions.

  • Common motor signs include weakness, tremors, gait abnormalities, and swallowing difficulty; common sensory signs include loss of touch, vision, or hearing, alongside psychogenic non-epileptic seizures.

  • Symptoms are involuntary (not malingering).

  • Glove Anesthesia: A classic presentation where numbness affects the entire hand in a glove-like pattern, ending sharply at the wrist. This distribution contradicts anatomical nerve pathways (which run length-wise down the arm), demonstrating incompatibility with neurological findings.

  • Factitious Disorder:

  • Deliberate fabrication or induction of physical or psychological symptoms without external incentives (e.g., financial gain or avoiding legal duty).

  • Factitious Disorder Imposed on Self: Falsification of symptoms, multiple complex surgeries, physician-shopping, and eagerness to undergo dangerous procedures.

  • Factitious Disorder Imposed on Another (Munchausen Syndrome by Proxy): A caregiver (most commonly a mother) deliberately fabricates or induces illness in a dependent to gain attention and social support.

• Etiology of Somatic Symptom Disorders

  • Biological Dimension:

  • Innate sensitivity to physiological signals, lower pain thresholds, and central nervous system hypervigilance.

  • Alterations in brain structure and impaired neural connectivity associated with early adverse experiences (e.g., child abuse).

  • Psychological Dimension:

  • Psychodynamic Model: Unconscious emotional distress is converted into bodily symptoms to maintain internal defense mechanisms (primary gain) and secure caregiving (secondary gain).

  • Cognitive-Behavioral Model: Somatic sensations are catastrophically misinterpreted; bodily attention amplifies perception, which is then reinforced by social rewards.

  • Social and Sociocultural Dimensions:

  • Parental modeling of injury/illness, parental over-attentiveness to somatic complaints, history of sexual abuse, and workplace bullying.

  • Systemic discrimination, marginalization, and oppressive social conditions contribute to altered stress reactivity and chronic pain expression.

• Treatment of Somatic Symptom Disorders

  • Establishing a therapeutic alliance, validating genuine physical distress, and educating patients on mind-body connections.

  • Cognitive-Behavioral Therapy (CBT): Focuses on restructuring catastrophic health cognitions, eliminating body checking, and utilizing interoceptive exposure to reduce fear of bodily sensations.

  • Mindfulness and Acceptance-Based Therapies: Mindfulness-Based Cognitive Therapy (MBCT) and Acceptance and Commitment Therapy (ACT) promote nonjudgmental awareness and help clients build a meaningful life alongside chronic pain.

Dissociative Disorders

• Overview and Diagnostic Categories

  • Involves a disruption or dissociation in the normal integration of consciousness, memory, identity, emotion, perception, body representation, motor control, or behavior.

  • Dissociative Amnesia:

  • Sudden inability to recall personal information, typically following trauma or severe stress.

  • Community prevalence is $1.8\%$ ($1.0\%$ for males, $2.6\%$ for females).

  • Localized Amnesia: Inability to recall all events during a specific time frame.

  • Selective Amnesia: Inability to recall specific details of a traumatic event.

  • Systematized Amnesia: Memory loss restricted to specific categories of information.

  • Dissociative Amnesia with Dissociative Fugue: Sudden, unexpected travel away from home accompanied by identity confusion or assumption of a new identity. Prevalence is $0.2\%$, rising during war or natural disasters.

  • Depersonalization / Derealization Disorder:

  • Persistent or recurrent experiences of detachment from one's own body or mental processes (depersonalization) or detachment from one's surroundings, feeling as if in a dream or movie (derealization).

  • Intact reality testing is maintained throughout.

  • Community prevalence is $2\%$, though $50\%$ to $75\%$ of adults experience transient, stress-induced episodes.

  • Dissociative Identity Disorder (DID):

  • Disruption of identity characterized by two or more distinct personality states (alters) or an experience of possession, accompanied by alterations in affect, memory, behavior, and consciousness.

  • Recurrent gaps in memory for daily events, personal information, and traumatic events (inter-identity amnesia).

  • Clinic prevalence is up to 9 times higher in females; general population prevalence is $1.5\%$.

• Etiology of Dissociative Disorders

  • Biological Dimension: Stress-induced disruptions in memory encoding, reduced hippocampal volume, and hypo-metabolism within the prefrontal cortex.

  • Psychological Dimension (Post-Traumatic Model): Dissociation serves as a psychological defense mechanism against severe childhood trauma. Individuals with high self-hypnotizability encapsulate traumatic memories into autonomous memory structures.

• Social and Sociocultural Dimension (Sociocognitive Model): Suggests DID can be an iatrogenic condition created by therapist suggestion, hypnosis, or media portrayals, where clients inadvertently adopt distinct alter roles.

  • Treatment of Dissociative Disorders

• Dissociative amnesia and fugue often resolve spontaneously; treatment targets co-occurring depression through CBT and stress management.

• Depersonalization/Derealization Disorder is treated with mindfulness, grounding techniques, and behavioral therapy.

• Trauma-Focused DID Therapy Steps:

  1. Establishing safety, stabilization, and symptom reduction.

  2. Processing and working through traumatic memories.

  3. Integration of alter personalities into a cohesive sense of self, complemented by emotion regulation training.

Trauma- and Stressor-Related Disorders

• Core Definitions and Clinical Classifications

  • Stressors: External conditions or events placing physical or psychological demands on an individual.

  • Stress: Internal physiological or psychological response to stressors.

  • Adjustment Disorder:

  • Occurrence of emotional or behavioral symptoms in response to an identifiable stressor within $3\,\text{months}$ of exposure.

  • Symptoms are out of proportion to the stressor's severity and resolve within $6\,\text{months}$ after the stressor or its consequences end.

  • Approximately $85\%$ of college undergraduates report experiencing a lifetime traumatic event.

  • Acute Stress Disorder (ASD):

  • Development of severe trauma-related symptoms lasting from $3\,\text{days}$ to $1\,\text{month}$ following direct or indirect exposure to actual or threatened death, serious injury, or sexual violence.

  • Affects $12\%$ to $26\%$ of individuals exposed to traumatic incidents.

  • Posttraumatic Stress Disorder (PTSD):

  • Trauma-related symptoms persisting for more than $1\,\text{month}$ following traumatic exposure.

  • Twice as prevalent in women. Prevalence rates are lowest in Asian Americans and elevated in African American and Latinx populations.

  • Core Symptom Clusters:

    1. Intrusion: Distressing dreams, flashbacks, recurrent memories.

    2. Avoidance: Internal and external avoidance of trauma cues.

    3. Negative Alterations in Cognition and Mood: Anhedonia, guilt, distorted blame.

    4. Arousal and Reactivity: Hypervigilance, exaggerated startle, sleep disruption.

  • May include depersonalization or derealization specifiers.

• Trauma Outcomes and Epidemiological Risk

  • Outcomes: Resilience (stable functioning), Recovery (initial distress with subsequent resolution), Delayed Symptoms, or Chronic Symptoms.

  • Undergraduate Lifetime Trauma Exposure Rates:

  • Natural Disaster: $57.5\%$

  • Unexpected Death of a Loved One: $26.7\%$

  • Witnessing a Serious Accident: $24.4\%$

  • Violent Crime Victim: $13.9\%$

  • Physical / Sexual Child Abuse: $11.7\%$

  • Unwanted Adult Sexual Force: $6.6\%$

  • PTSD Risk Rates by Trauma and Gender:

  • Rape: Male Exposure $0.7\%$ (PTSD Risk $65.0\%$); Female Exposure $9.2\%$ (PTSD Risk $45.9\%$).

  • Threat with Weapon: Male Exposure $19.0\%$ (PTSD Risk $1.9\%$); Female Exposure $6.8\%$ (PTSD Risk $32.6\%$).

  • Physical Attack: Male Exposure $11.1\%$ (PTSD Risk $1.8\%$); Female Exposure $6.9\%$ (PTSD Risk $21.3\%$).

• Etiology of ASD and PTSD

  • Biological Dimension: Sensitized autonomic nervous system, HPA axis dysregulation, impaired fear extinction, and reduced prefrontal cortex inhibition of amygdala fear responses.

  • Psychological Dimension: Pre-existing anxiety or depression, catastrophic cognitive styles, and inability to reframe trauma.

  • Social & Sociocultural Dimensions: Absence of social support, childhood maltreatment, race-based traumatic stress, and gender-role socialization.

• Treatment of Trauma Disorders

  • Pharmacotherapy: SSRIs (effective in $<60\%$ of cases, with only $20\%$ to $30\%$ achieving full remission); Prazosin (for nightmares), Propranolol (beta-blocker for arousal/sleep), and MDMA-assisted psychotherapy.

  • Psychotherapy: Cognitive-Behavioral Therapy (CBT), Trauma-Focused CBT (TF-CBT), Prolonged Exposure (PE) therapy, and Eye Movement Desensitization and Reprocessing (EMDR).

Psychological Factors Affecting Medical Conditions

• Overview of Psychophysiological Disorders

  • Physical disorders featuring demonstrable tissue damage or organic dysfunction where psychological factors play a central etiological role.

• Coronary Heart Disease (CHD)

  • Narrowing of coronary arteries supplying heart muscle with blood and oxygen.

  • Atherosclerosis: Build-up of plaque inside artery walls, causing arterial restriction.

• Broken Heart Syndrome (Takotsubo Cardiomyopathy): Severe acute emotional stress triggers a surge of norepinephrine, precipitating sudden cardiac dysfunction. Risk of heart attack rises to over $21\times$ normal within $24\,\text{hours}$ of losing a loved one.

  • Hypertension

• Normal blood pressure is below $120/80\,\text{mmHg}$; hypertension is defined as systolic blood pressure $≥ 140\,\text{mmHg}$ or diastolic $≥ 90\,\text{mmHg}$.

• Affects $116\text{ million}$ U.S. adults ($45\%$).

• Highest rates occur in adults aged $65+$ ($77\%$ to $78\%$) and African Americans ($54\%$).

• Headaches

  • Migraine Headaches: Neurological head pain with nausea and visual disturbances; accompanied by a sensory aura in $20\%$ of cases. Affects $20\%$ of the U.S. population. 3 to 4 times more common in women; highest prevalence is in Native Americans. Linked to visual cortex hypersensitivity.

  • Tension Headaches: Prolonged contraction of scalp and neck muscles resulting in constant, dull pain. Affects $70\%$ of adults/adolescents annually; causes more lost work days than migraines.

  • Cluster Headaches: Severe, excruciating stabbing pain localized around the eye or cheek. Affects $1\,\text{in}\,1000$ adults; 6 times more prevalent in men. Attacks last $15\,\text{minutes}$ to $3\,\text{hours}$. $55\%$ of sufferers report suicidal ideation.

• Asthma

  • Chronic inflammatory disease where airway inflammation, muscle contraction, and excessive mucus production restrict breathing.

  • Affects $8.2\%$ of the U.S. population.

  • Prevalence is highest in Puerto Ricans ($18\%$), youth aged 12–17 ($17\%$), and females ($15\%$). Genetic heritability is estimated at $35\%$.

• Etiology and Treatment

  • Etiology: Sympathetic nervous system overactivation, elevated cortisol release, hostility, low perceived control, social isolation, and discrimination.

  • Interventions: Progressive muscle relaxation, biofeedback, CBT, Mindfulness-Based Stress Reduction (MBSR), Acceptance and Commitment Therapy (ACT), and public health initiatives establishing communities of opportunity to reduce health disparities.