Comprehensive Study Guide to Personality, Dissociative, and Somatic Symptom Disorders
Foundations of Personality Disorders
Definition of Personality Disorders: Types of enduring patterns of inner experience and behaviour that deviate markedly from the expectations of the individual’s culture, are pervasive and inflexible, and lead to distress or impairment.
Onset and Trajectory:
Disordered personality traits become evident by adolescence or early adulthood and continue through much of adult life.
These patterns become so deeply ingrained that they are highly resistant to change.
Childhood Precursors and Risk Factors:
Children exhibiting early childhood behaviour problems are at a greater-than-average risk for developing personality disorders.
Significant childhood risk factors include conduct disorder, depression, anxiety, hyperactivity, impulsivity, and attention problems.
Etiological and Diagnostic Challenges:
Establishing a definitive etiology is difficult.
Research and clinical classification are complicated because many individuals with personality disorders do not seek psychological help, or at least do not seek treatment specifically for their personality disorder.
Immense clinical variability exists between individuals diagnosed with the same disorder, meaning disorders can at best be loosely classified.
Diagnostic and Statistical Manual (DSM) Cluster Classification:
Cluster A: Individuals perceived as odd or eccentric (Paranoid, Schizoid, Schizotypal).
Cluster B: Individuals whose behaviour is overly dramatic, emotional, or erratic (Antisocial, Borderline, Histrionic, Narcissistic).
Cluster C: Individuals who frequently appear anxious or fearful (Avoidant, Dependent, Obsessive-Compulsive).
Cluster A Personality Disorders: Odd or Eccentric Behaviour
General Cluster A Characteristics:
Described as withdrawn, cold, suspicious, and irrational.
Often perceived by others as odd and eccentric.
Distinct behavioral oddities frequently present an interpersonal barrier to meeting people and carry significant social stigma.
Paranoid Personality Disorder:
Core Definition: Characterized by persistent, pervasive suspiciousness regarding the motives of others, falling short of clear-cut, fixed delusions.
Interpersonal Presentation:
Individuals are low in trust and exceptionally high in suspicion.
They perceive malicious intent where none exists, rapidly concluding without evidence that others are deceitful or lying.
Presentation of contrary evidence is rationalized as a "cover-up" or an elaborate lie designed to deceive them.
Frequently over-analyzes everyday discussions for concealed meanings (e.g., repeatedly demanding, "What did you mean by that?" to a degree that significantly impairs social functioning).
Easily offended, hypersensitive to perceived slights, and persistently bears grudges.
Social and Solitary Functioning:
Preference for solitary activities.
Close associates or "friends" are accepted only after rigorous, prolonged evaluation.
Once established, relationships remain fragile and can be abruptly dismantled over minor, perceived insults.
Prevalence and Sex Ratio:
Lifetime prevalence ranges from to .
Diagnosed significantly more often in men than in women.
Therapeutic Engagement: Individuals rarely seek therapy voluntarily due to profound distrust of practitioners, viewing therapists with active suspicion.
Schizoid Personality Disorder:
Core Definition: Defined by persistent detachment from social relationships and a severely restricted range of emotional expression; individuals are typically described as recluses, loners, or eccentrics.
Emotional and Affective Profile:
Pervasive indifference to the external world, experiencing neither emotional highs nor lows.
Mood and expressive displays remain exceptionally narrow, blunted, and banal.
Perceived by observers as cold, uncaring, or secretive.
Display an absence of a sense of humour, rarely smiling or laughing.
Anger and frustration are virtually never expressed with outward hostility, agitation, or raised voices; instead, dissatisfaction emerges as quiet grumbling, absentmindedness, vague speech, and self-absorbed rumination (e.g., responding to an undesired work reassignment or demotion with quiet complaints that "things never used to be this way").
Interpersonal and Occupational Dynamics:
Isolation is entirely by choice; they do not experience distress over loneliness, lack of acceptance, or absence of affection.
Preference for strictly solitary employment with minimal human contact.
Social skills are characteristically deficient, although their articulation, syntax, and thought structures remain intact and conventional.
Some recognize social norms but do not care to apply them, while others lack social knowledge and demonstrate no motivation to learn.
Marriage occurs infrequently and typically out of convenience rather than emotional or romantic connection.
Interests and Activities:
Extremely restricted range of recreational pursuits; stimulating or creative hobbies (such as art, music, literature, or cinema) hold marginal interest.
Very limited sexual desire or activity.
Prevalence and Treatment Outlook:
Estimated prevalence ranges from to .
Therapy prognosis is poor because individuals possess neither the distress nor the motivation necessary to change.
Schizotypal Personality Disorder:
Core Definition: Marked by acute discomfort in close interpersonal relationships, pervasive cognitive or perceptual distortions, and distinct eccentricities in everyday behaviour.
Cognitive, Perceptual, and Speech Oddities:
Features eccentric patterns of communication and thought that occasionally appear delusional or unmoored from reality, though less severe than active schizophrenia.
Speech involves odd phrasing, idiosyncratic word choice, or unusual usage of common terms that clouds clarity.
Demonstrates clear paranoid ideation and acute distress or caution when around others.
Dialogue Exemplifying Schizotypal Thought Patterns:
Question: "You seem bothered. What’s going on?"
Response: "The bad people. Those are the ones that bother me. I don’t like them."
Question: "The bad people?"
Response: "The ones inside. The ones that bother me when I’m upset. They make me sad."
Question: "It sounds like there are people inside you."
Response: "Not people. Thoughts inside of me. But they are like people because they are all different, with different moods."
Question: "So your thoughts are what bother you?"
Response: "Yes. Bad thoughts…who sound like people sometimes."
Bizarre and Superstitious Beliefs:
Bizarre magical thinking, such as claiming the power to impart blessings or cast curses.
Belief that personal thoughts can directly manipulate reality, or that an internal negative mood or anger can trigger physical accidents or medical illness in other people.
Social Functioning and Clinical Continuum:
Severe absence of close friends; eccentric habits and beliefs push individuals to the social periphery.
Sits on a continuum between normative functioning and schizophrenia, posing elevated risk for transition to a full schizophrenic disorder relative to the general population.
Prevalence: Estimated at approximately .
Ideas of Reference:
Definition: A form of delusional or quasi-delusional thinking in which an individual attributes personal, self-referential meaning to external events or neutral actions of others that have zero connection to them.
Loose Association and Resistance to Fact:
Commonplace events are construed as deliberately coordinated malice.
Example: Hearing strangers laughing in a crowded room is interpreted as active mockery targeting the individual.
Example: Arriving at a store that has closed early leads the individual to conclude staff intentionally shut the doors because they observed them approaching.
When presented with factual counter-explanations (e.g., that a water pipe ruptured), the individual displays firm resistance (e.g., arguing: "They would want us to believe that… If a water pipe ruptured, then why didn’t they put up a sign? Where’s the water? Surely the fire dept would be here").
Cluster B Personality Disorders: Dramatic, Emotional, or Erratic Behaviour
Antisocial Personality Disorder (APD):
Core Definition: A chronic, pervasive pattern of disregard for, and active violation of, the rights of other human beings, beginning in childhood or adolescence.
Primary Behavioral Markers:
Chronic defiance of legal standards and social conventions (indiscriminate criminality, not ideologically motivated social protest).
High degrees of physical and verbal aggression, recurrent fights, and physical assaults.
Impulsive tendencies combined with pre-planned, calculated antisocial actions (e.g., intentionally carrying tools to burglarize cars or residences whenever opportunity arises).
Superficial charm paired with low anxiety in threatening or high-risk situations, complete lack of remorse, and absent guilt.
Frequently confounded with Attention-Deficit/Hyperactivity Disorder (ADHD); while ADHD involves pure impulsivity, APD combines impulsivity with coordinated, predatory disregard for others.
Substance Abuse Comorbidity: Marked by extremely high rates of alcohol and illicit drug abuse, which complicates differential diagnosis.
Epidemiological Prevalence:
General population prevalence is estimated at approximately , occurring far more frequently in men.
Among Canadian incarcerated male offenders, APD is the second most common psychiatric disorder (), surpassed only by substance use disorders ().
Population Comparison (Goldstein et al., 2017; Fazel & Danesh, 2002):
General Population Males: Approximately .
General Population Females: Approximately to .
Incarcerated Males: Approximately .
Incarcerated Females: Approximately .
Psychopathy Construct:
Affective and Interpersonal Features: Arrogance, extreme selfishness, callousness, lack of empathy, manipulativeness, superficial charm, deceitfulness, sensation seeking, shallow emotions, and absent remorse.
Lifestyle Features: Persistent disregard for social mores, impulsivity, and an unstable, socially deviant, or nomadic lifestyle.
Distinction Between Criminality and Psychopathy:
Not all individuals with criminal records exhibit psychopathy.
Only a minority of people with psychopathic traits become convicted criminals; many maintain law-abiding lives and achieve substantial success within their professions while continuing to demonstrate callous exploitation of others.
Borderline Personality Disorder (BPD):
Core Definition: Pervasive instability across interpersonal relationships, self-image, affect, and impulse regulation.
Historical Context: Conceptualized in the mid- century as occupying the clinical boundary between classical neuroses (anxiety) and psychoses (schizophrenia-spectrum delusions).
Symptom Manifestations:
Chronic internal feelings of emptiness and boredom.
Identity disturbance: ongoing uncertainty regarding foundational values, future goals, career paths, loyalties, friendships, and sexual orientation.
Hypersensitivity to rejection and intense fear of real or imagined abandonment.
Rapidly oscillating relationship patterns that swing violently between idealization (intense love/affection) and devaluation (intense hatred), completely lacking an emotional middle ground.
Splitting: Viewing individuals, circumstances, and self as either "all good" or "all bad."
Self-Destructive and Manipulative Actions:
Impulsive self-mutilation and recurrent suicidal threats, employed to relieve unbearable emotional agony, communicate unexpressed fury, or manipulate significant others into compliance or comfort.
Stormy therapeutic alliances; boundary setting by clinicians or partners is met with caustic rage, devaluation, and accusations.
Externalization of blame: individuals routinely project internal distress onto others, framing their hostile reactions as justified responses to perceived victimhood and mistreatment.
Epidemiology: General population prevalence ranges between and , rising to roughly among psychiatric inpatients.
Histrionic Personality Disorder:
Core Definition: Characterized by an excessive need to be the center of attention, accompanied by demands for constant reassurance, approval, and praise.
Interpersonal and Emotional Style:
Overly dramatic, shallow, and rapidly shifting emotional expressions.
Roles assumed in social settings alternate between "the star" and "the tragic victim."
Discomfort arises when they are not the central focus of attention, prompting manipulative behavior such as physical symptom dramatics, manufactured crises, or suicide gestures.
Aversion to normalcy; individuals court chaos and will abandon stable, supportive partners for risky, turbulent dynamics.
Cognitive style is impressionistic, lacking detail, and heavily laden with emotional generalities.
Demonstrates high suggestibility and naivety, easily swayed by others' opinions.
Dialogue Exemplifying Histrionic Cognitive Vagueness:
Question: "What did you do today?"
Response: "I saw a motorcycle. It was so cool."
Question: "But what did you do today?"
Response: "I wanna get a motorcycle. That would be awesome."
Question: "But what did you do today?"
Response: "Do you have a motorcycle? That would be awesome. You could take me out on it."
Question: "No I don’t have a motorcycle and I’m trying to find out what you did today?"
Response (becoming angry): "Instead of talking to me, maybe get one. I already told you what I did today."
Prevalence and Comorbidity: Diagnosed more often in women than in men; demonstrates strong comorbidity with somatic symptom disorders and dissociative identity disorder.
Narcissistic Personality Disorder:
Etiological Metaphor: Derived from the mythological figure Narcissus, who fell fatally in love with his own reflection in a water pool.
Core Diagnostic Profile:
Grandiose sense of self-importance, brilliance, or power, accompanied by expectations of unique entitlement and special treatment.
Preoccupation with boundless fantasies of success, beauty, genius, or idealized romance.
Firm conviction that one is uniquely gifted and can only be understood by high-status or special individuals.
Extreme fragility of underlying self-esteem, showing high vulnerability to perceived slights or insults when special status is denied.
Absent empathy, viewing others as utilitarian instruments; sexual partners are engaged primarily to boost self-esteem or serve personal physical gratification.
Prevalence and Demographics: Ranges from to in community samples; over of diagnosed individuals are male.
Cluster C Personality Disorders: Anxious or Fearful Behaviour
Avoidant Personality Disorder:
Core Definition: Marked avoidance of social relationships rooted in intense fears of rejection, disapproval, and public humiliation.
Emotional and Social Presentation:
Characterized by low self-worth and hypersensitivity to negative appraisal.
Outwardly appears shy, inhibited, cold, or strange; described by intimates as extraordinarily sensitive.
Deeply longs for close relationships, affection, and social acceptance, but isolates specifically to avoid emotional pain.
Willing to engage in relationships only after obtaining an ironclad, uncritical guarantee of unconditional acceptance.
Differential Contrast with Schizoid Personality Disorder:
While behaviorally identical in their solitary existence, their internal motivations are diametrically opposed.
Schizoid individuals isolate voluntarily because they lack interest in relationships and feel no loneliness.
Avoidant individuals isolate out of acute fear, experiencing profound loneliness and severe emotional angst over their detachment.
Prevalence: Approximately of the general population; displays equal distribution between men and women.
Dependent Personality Disorder:
Core Definition: Characterized by an excessive need to be cared for, resulting in submissive, clinging behaviors and profound difficulty making everyday independent choices.
Behavioral Dynamics and Decision-Making:
Requires continuous advice and validation from others to make trivial daily choices.
Relinquishes personal goals and autonomy to avoid pushing others away.
Assumes an excessively compliant, meek posture driven by persistent fears of abandonment or loss of support.
Even in stable, loving relationships, internal dread remains high that the caregiver will abandon them, die, or relocate.
Interpersonal Feedback Loop:
Clinging and demanding reassurance often drives others away, as friends and partners come to view them as needy or draining.
Sensing this withdrawal, the dependent individual escalates their clinging behaviour, further driving others away.
Prevalence: Diagnosed substantially more often in women.
Obsessive-Compulsive Personality Disorder (OCPD):
Core Definition: A rigid pattern of perfectionism, interpersonal control, excessive orderliness, and inflexible adherence to rules, lacking spontaneous emotional expression.
Behavioral Characteristics:
Stiff, formal demeanor with an absence of warmth.
Preoccupation with minutiae, protocols, schedules, and lists to the detriment of actual efficiency and the broader objective.
Insists that other individuals execute tasks exactly according to their precise standards, remaining oblivious to the resentment this creates.
Socializing is approached as an organized duty or a productivity problem to be optimized rather than an enjoyable activity.
Clinical Case Illustrations (Shapiro, 1965, Neurotic Styles):
A patient methodically scheduled Sundays with rigid activities designed to produce "maximum enjoyment," becoming severely distressed when deviations occurred, upset that leisure time was spent "inefficiently."
Another patient exerted rigorous, premeditated effort during social events to force himself to act "spontaneous."
Epidemiological Profile: Lifetime prevalence ranges from to , occurring twice as often in men than women.
Distinction Between OCPD and Obsessive-Compulsive Disorder (OCD):
Insight and Ego-Syntonicity vs. Ego-Dystonicity:
OCD is ego-dystonic: Patients recognize their obsessions and rituals as irrational and distressing, desperately wishing to cease them to be like others.
OCPD is ego-syntonic: Individuals view their exacting standards as completely rational, efficient, superior, and appropriate, wishing others would emulate their meticulous habits.
Nature of Rituals:
OCD rituals are driven by anxiety-reduction mechanisms to ward off catastrophic thoughts.
OCPD behaviors are not driven by compulsions to reduce panic, but by a pervasive dedication to neatness, order, and productivity.
Locus of Distress:
Individuals with OCD suffer internal distress regarding their disability.
Individuals with OCPD feel distressed by other people's carelessness, inefficiency, or failure to meet their exacting standards.
Diagnostic Complexities and Theoretical Perspectives
Classification Problems in Personality Disorders:
Reliability and Validity: Diagnoses suffer from lower diagnostic reliability and validity due to high symptom variability among individuals with the same label.
Comorbidity Overlap: Co-occurrence is frequent, though cross-diagnosis occurs almost exclusively within clusters rather than across Clusters A, B, and C.
Differentiating State vs. Trait: Severe situational stress or transient axis-I conditions can mimic personality pathology; symptoms must be sustained, lifelong baselines rather than temporary responses to adversity.
Theoretical Frameworks:
Psychodynamic Perspective:
Traditional Freudian Theory: Traced personality pathology to unresolved Oedipal conflicts.
Hans Kohut (Self Psychology): Emphasized healthy development of the self; deficits in parental empathy produce narcissistic vulnerability.
Otto Kernberg: Formulated borderline pathology through the defense of splitting (inability to synthesize positive and negative self/other representations).
Margaret Mahler: Linked borderline symptoms to disruptions during the childhood separation-individuation phase.
Learning Perspective:
Conceptualizes personality disorders not as fixed internal traits, but as maladaptive learned behavioral repertoires.
Focuses on environmental learning histories, direct reinforcement schedules, and situational triggers that maintain dysfunctional behavior.
Family Perspectives:
Pinpoints dysfunctional domestic environments as developmental root causes.
Severe fears of abandonment and emotional dysregulation are tied to disrupted parent-child attachments, early neglect, and physical or sexual abuse.
Cognitive-Behavioural Perspective:
Focuses on distorted cognitive schemas that filter social situations (e.g., antisocial youth routinely interpreting neutral social gestures as deliberate provocations or hostile challenges).
Observational learning and behavioral modeling reinforce aggressive problem-solving patterns.
Biological Perspectives:
Substantial heritability established through twin and adoption methodologies.
Genotype influences phenotype and determines the environments individuals actively seek out.
Jeffrey Gray's Reinforcement Sensitivity Theory: Explains personality variations based on underlying neurobiological sensitivity to reward (Behavioral Activation System) versus punishment/threat (Behavioral Inhibition System).
Sociocultural Perspective:
Evaluates social stressors, cultural expectations, and socioeconomic status (SES) risk variables that amplify vulnerability to personality dysfunction.
Treatment Approaches for Personality Disorders:
Psychodynamic Therapy: Aims to expand client insight into the unconscious childhood roots of self-defeating behaviors, fostering healthier relational patterns.
Cognitive-Behavioural Therapy: Aims to systematically identify cognitive distortions, alter irrational beliefs, and replace maladaptive habits with functional behavioral skills.
Pharmacological Interventions:
No psychotropic medication cures or directly alters the underlying personality structure.
Antidepressants and anxiolytics are utilized adjusively to alleviate concurrent mood or anxiety symptoms.
Selective Serotonin Reuptake Inhibitors (SSRIs, such as Prozac) demonstrate efficacy in moderating severe aggression, impulsivity, and affective irritability.
Dissociative Disorders
Core Definition: Pathological disruptions in the normal integration of consciousness, memory, identity, emotion, perception, body representation, motor control, and behavior.
DSM-5 Classifications:
Dissociative Identity Disorder (DID)
Dissociative Amnesia (including the Dissociative Fugue subtype)
Depersonalization/Derealization Disorder
Unspecified Dissociative Disorder
Dissociative Identity Disorder (DID):
Core Features: Presence of two or more distinct or alternate personality states ("alters"), each maintaining its own distinct memories, self-concept, and behavioral traits that intermittently take control of the body.
Subjective Phenomenology: Patients frequently report "third-person" experiences, feeling as if they are detached observers watching their speech and actions from outside their physical frame without control.
Distinction from Schizophrenia: DID is distinct from schizophrenia (which involves a "split mind" marked by psychosis, delusions, and thought disintegration rather than multiple integrated personality identities).
Trauma History and Comorbidity:
of diagnosed individuals in Canada, the United States, and Europe report histories of severe childhood sexual and physical abuse.
High comorbidity exists with Post-Traumatic Stress Disorder (PTSD), depressive disorders, personality disorders, anxiety disorders, and somatic symptom disorders.
Dissociative Amnesia:
Core Definition: Inability to recall important autobiographical memories, typically of a traumatic or stressful nature, that is inconsistent with ordinary forgetfulness and lacks an organic or neurological cause.
Preserved Capacities: General semantic knowledge, cognitive reasoning, and motor skills remain intact.
Reversibility: Unlike neurodegenerative amnesias, dissociative memory loss is potentially reversible.
Memory Gap Variations:
Remote Memory Gaps: Inability to recall major milestones (e.g., personal wedding, giving birth, death of a relative).
Dependable Memory Gaps: Forgetting recent events of the day, or temporarily losing procedural skills (e.g., forgetting how to drive, how to operate a computer, or how to locate one's residence).
Amnesia of the Amnesia: Lacking awareness of the memory gap until confronted by physical proof (e.g., discovering unfamiliar furniture in the home, or finding drawings and texts written in one's personal handwriting without recollection of creating them).
Contrast with Normal Dissociation: Distinct from ordinary "tuning out" during automatic, highly practiced activities such as highway driving, light reading, walking, or meditation.
Dissociative Fugue Subtype:
An extremely rare subtype of dissociative amnesia involving sudden, unexpected travel away from home or workplace, accompanied by an inability to recall one's past and confusion about personal identity (or the assumption of a new identity).
Memory gaps during fugue can span weeks or months.
During the fugue episode, individuals appear entirely normal to observers, interacting appropriately with the environment despite complete loss of autobiographical memory.
Malingering vs. Factitious Disorder:
Malingering: The intentional production of false or grossly exaggerated physical or psychological symptoms motivated by external incentives or secondary gains (e.g., evading criminal prosecution, avoiding military or workplace duty, obtaining financial damages, or acquiring prescription drugs).
Dissociative amnesia and DID are sometimes introduced in criminal defense contexts (e.g., the legal defense strategy of Kenneth Bianchi, the "Hillside Strangler").
Factitious Disorder: The intentional fabrication or induction of symptoms in the absence of obvious external rewards, driven by an internal psychological drive to assume the sick role and receive medical attention.
Depersonalization/Derealization Disorder:
Depersonalization: Persistent experiences of unreality, detachment, or being an outside observer with respect to one's thoughts, feelings, sensations, or body (e.g., feeling like an automaton, robot, or operating on automatic pilot).
Derealization: Persistent experiences of unreality or detachment with respect to surroundings (e.g., perceiving the external world as dreamlike, foggy, artificial, with washed-out or hyper-vivid colors, or altered passage of time).
Intact Reality Testing: Individuals consistently recognize that these perceptual distortions are internal anomalies, differentiating the disorder from psychotic hallucinations.
Prevalence of Transient Episodes: Brief, isolated episodes of depersonalization occur in approximately of all adults during times of acute, extreme stress.
Theoretical Explanations and Controversies in Dissociative Disorders:
Psychodynamic View: Views dissociation as an extreme manifestation of the ego defense mechanism of repression, blocking intolerable sexual or aggressive impulses and traumatic memories from conscious awareness.
Learning and Cognitive Views:
Dissociative avoidance is negatively reinforced by immediate relief from internal anxiety, guilt, or shame.
Role-playing perspectives suggest alters are shaped through social modeling and expectations.
Diathesis-Stress Model: Dissociative disorders arise when individuals possessing a high fantasy proneness, high hypnotizability, or histrionic personality vulnerabilities experience severe environmental trauma.
Sociocultural Perspective (Nicholas Spanos, Carleton University):
Argues that hypnosis, multiple personalities, and spirit possession represent socially constructed, demand-driven role enactments rather than true distinct altered internal states.
Enactments are learned through observation, media exposure, and therapeutic promptings within a specific culture.
Skepticism Regarding DID Validity (Spanos, Lilienfeld, & Lynn):
Re-evaluations indicate that early trauma histories are not uniformly present in all documented DID cases, and correlation between abuse and dissociation does not establish direct causality.
The vast majority of severe trauma survivors never develop dissociative identity pathology.
Selection bias exists in published clinical case studies, as trauma survivors seeking therapy are overrepresented.
Applying David Hume’s maxim: "Extraordinary claims demand extraordinary evidence."
Media Influence and Diagnostic Trends (Eliza van Dyck & Spinhoven):
Diagnostic spikes followed media depictions such as The Three Faces of Eve, Sybil, The United States of Tara, and films like Fight Club, Me, Myself & Irene, Secret Window, and Dr. Jekyll & Mr. Hyde.
In the , DID cases reported an average of distinct personalities; by the late , cases reported an average of personalities without a structural diagnostic basis for the surge.
Recovered Memory Controversy and False Memories:
Marked by legal disputes such as R. v. François.
In the , a recovered-memory movement promoted uncovering repressed childhood abuse through suggestive therapy.
Richard Webster (1995) highlighted clinical abuse where time-limited group therapy participants without abuse memories were instructed that therapy goals required uncovering incest; therapists warned time was running out, leading patients to construct intrusive mental imagery into false "flashback" memories.
Accusations of parental sexual abuse in the United States registered via these methods grew from a few hundred in to in .
Normal memory is constructivist rather than photographic; it is filtered through subjective expectation, decays over time, and reconstructs missing details using plausible inferences.
Treatment Approaches for Dissociative Disorders:
Psychoanalysis: Focuses on uncovering early childhood conflicts and processing repressed trauma.
Cognitive Behaviour Therapy (CBT): Focuses on challenging maladaptive cognitions, cognitive restructuring, and developing ground-level coping skills.
Pharmacotherapy: Primarily treats secondary comorbidities such as depression and anxiety.
Somatic Symptom and Related Disorders
Core Definition: Psychological disorders in which patients present with persistent physical complaints that cause distress and functional impairment, despite the absence of an organic or physiological pathology.
Distinction from Phantom Limb: Distinct from phantom limb sensations, where post-amputation nerve pathway signaling produces authentic pain sensations in an absent extremity.
Conversion Disorder (Functional Neurological Symptom Disorder):
Clinical Features: Symptoms or deficits affecting voluntary motor or sensory functioning that are physiologically incompatible with known neurological or medical conditions.
Classic Symptoms: Unexplained motor paralysis, non-epileptic seizures, balance and coordination deficits, blindness, tunnel vision, anosmia (loss of smell), aphonia, or localized limb anaesthesia.
Etiological Mechanism: Psychodynamic models view symptoms as physical conversions of intolerable internal anxiety, typically erupting following acute trauma or protracted distress.
Incidence: Very rare, with an estimated incidence of roughly new cases diagnosed per year in Canada.
La Belle Indifférence ("Beautiful Ignorance"):
A paradoxical absence of emotional distress or concern regarding severe physical symptoms.
Presentation can resemble a semi-trance state; an individual whose leg becomes paralyzed might unconcernedly drag the limp limb to work, indifferent to onlookers' stares or offers of medical assistance.
Illness Anxiety Disorder:
Core Definition: Preoccupation with having or acquiring a serious, undiagnosed medical illness, accompanied by high health anxiety despite absent or minimal physical symptoms.
Cognitive Presentation: Persistent anxiety resistant to benign medical findings or objective physician reassurances.
Dialogue Exemplifying Illness Anxiety Thought Cycles:
Patient: "My heart is beating fast and I feel flush. There’s something wrong with my heart."
Response: "Umm. You just did a run."
Patient: "Ya but still. My heart is really beating fast and I’m wondering."
Patient: "I have a mole. Skin cancer."
Response: "You’ve had that mole since birth."
Patient: "But I think it’s darker. Does it look darker to you? Definitely skin cancer."
Compulsive Body Checking: Repetitive behaviors including inspecting the body in mirrors, obsessively monitoring scales, checking skin for discoloration or lumps, scrutinizing bodily waste (urine and feces), and spending hours browsing medical databases.
Distinction from Situational Anxiety: Normal situational health concern (such as seeking testing following a relative's serious diagnosis) is transient; illness anxiety disorder is chronic and pervasive.
Subtypes:
Care-Seeking Subtype: Engaging in frequent "doctor shopping," visiting numerous specialists in pursuit of confirmation of feared diseases.
Care-Avoidant Subtype: Postponing or avoiding medical checkups, appointments, and diagnostic laboratories out of intense panic over what findings might reveal.
Somatic Symptom Disorder:
Diagnostic Criteria: Presence of one or more distressing physical symptoms accompanied by excessive, disproportionate thoughts, feelings, and behaviors regarding symptom seriousness.
Epidemiology:
Prevalence is estimated between and of the general population.
Diagnosed roughly times more frequently in women than in men.
Disparities in diagnostic rates may partly stem from men visiting physicians less frequently, which risks underdiagnosis and untreated medical illness.
Behavioral and Social Impairment:
Symptoms endure for years or across the entire lifespan.
Marked by frequent physician visits, repeat emergency admissions, and avoidance of travel out of fear that adequate medical care will be inaccessible.
Constant health preoccupation generates severe strain on interpersonal relationships.
Relation to Medical Illness and Psychosis:
A genuine medical condition may be present, but the individual's anxiety, functional disability, and medical consumption are grossly disproportionate to the actual pathology.
Somatic delusions can appear in psychotic disorders (e.g., insisting an instrument was left in the abdomen despite having never undergone surgery); if somatic concerns resolve when the psychosis remits, the diagnosis is a primary psychotic disorder.
Abnormal Illness Behaviour: Defined as the persistent maintenance of a maladaptive mode of experiencing, evaluating, and responding to health status, marked by an unyielding insistence on occupying the "sick role" despite conflicting clinical evaluations.
Factitious Disorders:
Core Definition: Intentional faking, induction, or fabrication of physical or psychological signs or symptoms without external incentives or secondary gain.
Factitious Disorder Imposed on Self (Munchausen Syndrome):
Individuals deliberately induce medical symptoms (e.g., contaminating urine samples, injecting bacteria, ingesting medications, falsifying records, inflicting physical injury).
Named by Richard Asher in after Baron von Munchausen (), an -century German cavalry officer noted for telling outlandish, fabricated tales.
Individuals endure deep anguish, moving between hospitals and submitting to painful, unnecessary medical investigations and surgeries to secure attention.
Factitious Disorder Imposed on Another (Munchausen by Proxy Syndrome / MBPS):
An individual (most frequently a parent) feigns, exaggerates, or induces physical illness in another person (typically their dependent child).
Manifests as a dangerous and sometimes fatal form of child abuse, driven by the perpetrator's pathological drive to receive sympathy, attention, and praise for devotion.
Theoretical Explanations for Somatic Disorders:
Psychodynamic Theory: Symptoms are viewed as hysterical expressions of repressed conflicts, exacerbated in individuals with high trait anxiety and neuroticism.
Learning Theory: Symptoms are reinforced through secondary gains: avoidance of difficult duties, caretaking from relatives, and validation from peers that amplifies symptom severity.
Cognitive Theory: Rooted in distorted cognitive schemas and catastrophic misinterpretations of normal bodily sensations (e.g., maintaining the core belief that life must remain entirely free of physical discomfort, viewing any minor ache as an unacceptable medical threat).
Treatment Approaches for Somatic Symptom and Related Disorders:
Psychoanalysis: Explores unconscious intrapsychic distress and the symbolic meaning behind physical symptoms.
Behavioural Methods: Focuses on removing secondary reinforcers of the sick role and rewarding healthy, adaptive functioning.
Cognitive Behaviour Therapy (CBT): Focuses on restructuring catastrophic health cognitions and curbing compulsive body checking and reassurance seeking.
Pharmacological Approaches: Selective Serotonin Reuptake Inhibitors (SSRIs) are employed to treat concurrent depressive episodes and reduce health-related anxiety.