CONVERSION DISORDER

SCF-RDOS INDICATION REGISTRY ENTRY

Classification

Category	Classification
Clinical Domain	Somatic Symptom and Related Disorders
DSM-5-TR Classification	Functional Neurological Symptom Disorder (Conversion Disorder)
SCF-RDOS Domain	Neuropsychiatric, Psychological, Cognitive, Behavioral, Trauma
Primary Functional Systems	Sensorimotor Integration, Emotional Processing, Stress Adaptation, Threat Response, Neurocognitive Regulation
Pathophysiological Classification	Functional Neuropsychological Expression Syndrome
Typical Age of Onset	Late Childhood to Adulthood
Clinical Course	Acute, Episodic, Recurrent, Chronic
Severity Spectrum	Mild Functional Symptoms → Moderate Neurological Dysfunction → Severe Functional Disability
Functional Impact	Neurological, Psychological, Occupational, Social, Physical

DEFINITION

CONVERSION DISORDER is a functional neuropsychiatric condition characterized by neurological symptoms affecting voluntary motor function, sensory processing, speech, movement, consciousness, or neurological performance that cannot be fully explained by recognized neurological disease and are associated with dysfunction in brain network regulation rather than structural neurological injury.

Symptoms are genuine, involuntary, and capable of causing significant impairment. Manifestations may include weakness, paralysis, tremors, abnormal movements, gait disturbances, sensory loss, blindness, non-epileptic seizures, speech disturbances, or episodes resembling neurological disease.

Within the SCF-RDOS framework, Conversion Disorder is conceptualized as a functional neurobiological adaptation syndrome involving dysregulation across emotional-processing systems, threat-response networks, sensorimotor integration circuits, attentional-control architecture, autonomic regulation pathways, and stress-adaptation mechanisms.

ETIOPATHOGENIC CORE

Primary Pathogenic Theme

Psychological, emotional, or neurobiological stressors become functionally translated into neurological symptoms through maladaptive interactions between emotional-processing systems and sensorimotor regulatory networks.

Core Pathogenic Drivers

Domain	Contribution
Psychological Trauma	Functional neurological adaptation
Chronic Stress	Neurocognitive dysregulation
Emotional Conflict	Somatic expression pathways
Threat-System Hyperactivation	Sensorimotor interference
Dissociative Vulnerability	Functional neurological disruption
Adverse Life Events	Stress-system overload
Neurobiological Sensitization	Functional symptom consolidation
Maladaptive Predictive Processing	Symptom persistence

SCF FAULT ARCHITECTURE

Tier 1 — Foundational Vulnerability Layer

Predisposing Factors

Potential contributors include:

Childhood trauma
Emotional neglect
Physical abuse
Sexual abuse
Chronic psychological stress
Anxiety disorders
Depressive disorders
Family history of functional neurological symptoms

Neuropsychological Vulnerabilities

Common factors include:

High emotional sensitivity
Dissociative tendencies
Somatic symptom vulnerability
Reduced emotional expression
Stress-reactivity predisposition

Tier 2 — Emotional–Neurological Interface Dysfunction

Stress-System Dysregulation

Persistent stress may produce:

Hyperactivation of threat-processing systems
Emotional-processing overload
Autonomic instability
Attentional dysregulation
Functional neurological sensitization

Predictive Processing Disruption

Manifestations may include:

Dysfunction	Consequence
Altered symptom prediction	Neurological symptom generation
Threat expectation bias	Symptom reinforcement
Sensorimotor misinterpretation	Functional impairment
Hypervigilance	Symptom amplification
Attention fixation	Symptom persistence

Tier 3 — Functional Neurological Symptom Formation

Motor Symptoms

Manifestations may include:

Limb weakness
Paralysis
Tremors
Dystonia
Gait abnormalities
Coordination impairment
Abnormal movements

Sensory Symptoms

Manifestations may include:

Numbness
Sensory loss
Vision disturbances
Hearing disturbances
Altered sensation
Functional blindness

Consciousness and Speech Symptoms

Manifestations may include:

Non-epileptic seizures
Speech disturbances
Mutism
Altered awareness episodes
Functional cognitive disruptions

Tier 4 — Functional and Disability Decompensation

Potential outcomes include:

Occupational disability
Academic impairment
Mobility limitations
Healthcare overutilization
Social withdrawal
Chronic symptom persistence
Anxiety amplification
Reduced quality of life

MOLECULAR MULTI-OMICS PATHOGENESIS MAP

Genomics

Potential susceptibility systems:

Stress-response genes
Emotional-regulation pathways
Neuroplasticity regulators
Anxiety-associated genetic networks
Sensorimotor integration pathways

Epigenomics

Potential alterations:

Trauma-associated methylation signatures
Chronic stress adaptations
Neuroendocrine remodeling
Threat-response regulatory modifications

Transcriptomics

Potential dysregulated pathways:

Emotional-processing networks
Stress-response signaling pathways
Sensorimotor integration systems
Neuroplasticity-related mechanisms

Proteomics

Potential abnormalities:

Neurotrophic factors
Stress-response proteins
Synaptic signaling mediators
Neuroimmune regulatory proteins

Metabolomics

Potential disturbances:

Cortisol metabolism
Catecholamine regulation
Mitochondrial energetics
Neurotransmitter homeostasis
Oxidative stress pathways

Interactomics

Potential network dysfunction:

Emotion–motor coupling abnormalities
Threat–sensorimotor interactions
Attention–symptom reinforcement loops
Neuroendocrine–neurological dysregulation

Connectomics

Frequently implicated neural circuits:

Circuit	Functional Consequence
Prefrontal Cortex	Impaired top-down sensorimotor regulation
Amygdala	Threat amplification
Anterior Cingulate Cortex	Emotional–motor integration dysfunction
Insular Cortex	Altered bodily awareness
Supplementary Motor Area	Functional motor symptom generation
Temporoparietal Networks	Altered self-agency processing
Salience Network	Symptom prioritization and reinforcement

Adapted from SCF multi-omic pathophysiology reconstruction principles.

PATHOGENESIS FLOW (SCF LOGIC)

Psychological Trauma or Stress

↓

Threat-System Activation

↓

Emotional Processing Overload

↓

Autonomic and Neurocognitive Dysregulation

↓

Sensorimotor Integration Dysfunction

↓

Altered Predictive Processing

↓

Functional Neurological Symptom Formation

↓

Symptom Reinforcement

↓

Functional Impairment

↓

Conversion Disorder

CLINICAL PRESENTATION

Motor Symptoms

Weakness
Functional paralysis
Tremors
Abnormal gait
Coordination difficulties
Limb dysfunction
Movement abnormalities

Sensory Symptoms

Numbness
Tingling
Vision loss
Hearing disturbances
Sensory deficits
Altered bodily sensations

Seizure-Like Symptoms

Psychogenic non-epileptic seizures
Altered awareness episodes
Functional collapse episodes
Transient unresponsiveness

Cognitive Symptoms

Concentration difficulties
Brain fog
Dissociative experiences
Attention dysregulation
Cognitive fatigue

Emotional Symptoms

Anxiety
Emotional distress
Trauma-related symptoms
Psychological overwhelm
Fear regarding symptoms

Functional Symptoms

Occupational impairment
Educational disruption
Mobility restrictions
Social withdrawal
Dependence on caregivers

PATHOGENS → SYMPTOMATOLOGY → SCF FAULT TIER MAPPING

Pathogenic Driver	Clinical Manifestation	SCF Tier
Trauma and stress	Emotional overload	Tier 1
Threat-system activation	Neurocognitive dysregulation	Tier 2
Sensorimotor dysfunction	Functional neurological symptoms	Tier 3
Symptom reinforcement	Persistent disability	Tier 3
Chronic impairment	Functional decompensation	Tier 4

ASSOCIATED CONDITIONS

Conversion Disorder commonly overlaps with:

Complex Post-Traumatic Stress Disorder
Post-Traumatic Stress Disorder
Dissociative Disorders
Somatic Symptom Disorder
Functional Neurological Disorder
Panic Disorder
Generalized Anxiety Disorder
Major Depressive Disorder
Childhood Trauma Syndrome
Chronic Psychological Exhaustion
Health Anxiety Disorder

DIAGNOSTIC CONSIDERATIONS

Core Diagnostic Features

Individuals commonly demonstrate:

One or more neurological symptoms affecting motor or sensory function
Symptoms incompatible with recognized neurological disease patterns
Genuine involuntary symptom expression
Significant distress or functional impairment
Clinical evidence of functional neurological dysfunction

Differential Considerations

Condition	Distinguishing Feature
Neurological Disorders	Structural or physiological neurological pathology identified
Epilepsy	Electroclinical seizure activity present
Somatic Symptom Disorder	Symptom concern predominates rather than neurological dysfunction
Factitious Disorder	Intentional symptom production
Malingering	External incentives drive symptom presentation
Dissociative Disorders	Dissociation predominates without major neurological manifestations

SCF THERAPEUTIC MECHANISMS

SCF-PCR PREVENTATIVE

Objectives

Reduce trauma burden
Improve emotional processing
Strengthen stress resilience
Prevent symptom consolidation
Enhance adaptive coping systems

SCF-PCR CURATIVE

Therapeutic Targets

Sensorimotor Layer

Functional movement restoration
Sensorimotor reintegration
Symptom interruption

Emotional Layer

Trauma processing
Emotional regulation enhancement
Stress reduction

Cognitive Layer

Predictive-processing recalibration
Symptom reinterpretation
Fear reduction

Neurobiological Layer

Threat-system stabilization
Autonomic regulation
Neuroplastic adaptation support

SCF-PCR RESTORATIVE

Functional Restoration Goals

Recovery of neurological functioning
Restoration of mobility and independence
Occupational reintegration
Emotional stability
Long-term resilience
Improved quality of life

CURRENT EVIDENCE-BASED TREATMENT APPROACHES

Psychological Interventions

First-Line Approaches

Cognitive Behavioral Therapy (CBT)
Functional Neurological Disorder-Focused Psychotherapy
Trauma-Focused Therapy
Acceptance and Commitment Therapy (ACT)
Psychodynamic Psychotherapy

Therapeutic Objectives

Reduce symptom reinforcement
Improve emotional processing
Restore functional capacity
Reduce fear and avoidance

Rehabilitation Interventions

Physical Therapy
Occupational Therapy
Speech and Language Therapy (when indicated)
Functional Movement Retraining
Graded Activity Programs

Multidisciplinary Care

Optimal management often involves:

Neurology
Psychiatry
Psychology
Rehabilitation Medicine
Physical Therapy
Occupational Therapy

PROGNOSIS

Prognosis is influenced by:

Duration of symptoms
Severity of functional impairment
Trauma burden
Treatment engagement
Early diagnosis
Comorbid psychiatric conditions
Family and social support
Symptom reinforcement patterns

Earlier recognition and multidisciplinary treatment are generally associated with improved functional recovery and reduced chronic disability.

SCF THERAPEUTIC MECHANISMS (SCF-PCR BRAID)

Preventative

Trauma mitigation
Stress resilience enhancement
Emotional-processing support
Early symptom recognition

Curative

Functional neurological restoration
Sensorimotor reintegration
Threat-system recalibration
Emotional healing

Restorative

Functional independence
Occupational recovery
Social reintegration
Long-term adaptive stability

PROJECT RHENOVA — INTEGRATION PATHWAYS

Research Axis 1

Multi-omic characterization of functional neurological symptom disorders.

Research Axis 2

Emotion–sensorimotor interface biomarker discovery.

Research Axis 3

Functional neurological connectomics and predictive-processing network mapping.

Research Axis 4

Trauma–neurological symptom conversion pathway modeling.

Research Axis 5

Precision neurorehabilitation frameworks for functional neurological disorders.

NEXT STRATEGIC RESEARCH PATHWAYS

Functional neurological biomarker discovery programs.
Predictive-processing dysfunction mapping studies.
Emotion–motor network connectomics investigations.
Trauma-associated neuroplastic adaptation research.
Autonomic–sensorimotor interaction characterization.
Digital phenotyping of functional neurological symptom trajectories.
AI-assisted recovery prediction systems.
Precision rehabilitation-response biomarker development.
Neuroplasticity mechanisms of functional recovery.
Functional outcome endpoint development for conversion disorder rehabilitation.