Conversion Disorder (Functional Neurological Symptom Disorder)
One or more motor or sensory symptoms incompatible with known neurological or medical conditions.
Etiology (Biopsychosocial Model)
Biological: Neural dysconnectivity, emotional–motor dissociation
Psychological: Trauma, conflict, repression (Freudian legacy)
Social: Role modeling, secondary gain, culture-bound symptoms
Symptoms & Diagnosis (Mnemonic: FACTS)
F - Functional impairment present
A - Abnormal movements or sensations (e.g., paralysis, blindness)
C - Clinical inconsistency with known pathophysiology
T - Tests are normal
S - Symptoms cause distress or medical attention
Treatment
Education: About the diagnosis itself can be therapeutic
CBT and physical therapy
Stress management, hypnosis (in some cases)
Info
DSM-5-TR Code
F44.x (depends on symptom type)
Prevalence
Rare; estimated 2–5 per 100,000 annually; more common in females and under stress