Pilot's Arm Numbness Before Takeoff: Conversion Disorder (Functional Neurological Symptom Disorder)

The scenario describes a classic presentation of Conversion Disorder (now termed Functional Neurological Symptom Disorder / FND in DSM-5).

Key Features

• Neurologic symptom (arm numbness/weakness) incompatible with anatomical pathways.
• Precipitated by psychological stressor (pre-flight anxiety, performance pressure, fear of medical disqualification).
• Not intentionally produced (vs. malingering/factitious disorder).
• Not explained by medical condition – negative workup (EMG/NCS, MRI, labs).
• Significant distress/impairment – Grounds pilot; threatens career.

Why Pilots Are Vulnerable

• High-stakes, high-responsibility, rigid medical certification (FAA/EASA).
• Fear of reporting symptoms → license loss.
• Suppressed anxiety converts to somatic symbol (arm = control/yoke).

Management

1. Neurologic exclusion – Rule out TIA, radiculopathy, thoracic outlet, MS, PNS.
2. Psychiatric/psychological evaluation – Confirm FND; assess comorbid anxiety, depression, PTSD.
3. Education & Reassurance – "Real symptoms, reversible mechanism." Reduces fear.
4. CBT / CBT-FND – Cognitive restructuring, exposure, behavioral experiments.
5. Physical therapy – Motor retraining, graded activity.
6. Occupational coordination – FAA HIMS program, AME collaboration; return-to-fly pathway.

FND is treatable. Early multidisciplinary intervention restores function and careers.