Are nerve conduction studies altered in functional neurological disorders?
Eglė Sukockienė1, Frédéric Assal1, Annemarie Hübers1
1Department of Clinical Neurosciences, Geneva University Hospitals, Switzerland.
Clinical Neurophysiology Practice
|June 27, 2022
Summary
Functional neurological disorders can cause muscle weakness. This case study shows altered F-waves in functional neurological disorder, suggesting potential central nervous system dysfunction.
Area of Science:
- Neurology
- Neurophysiology
Background:
- Functional neurological disorders (FNDs) lack clear diagnostic markers.
- This report details a case of FND presenting with unilateral muscle weakness.
Observation:
- A patient developed bilateral lower limb weakness post-surgery.
- Persistent left lower limb weakness and sensory loss were noted.
- Electrophysiological studies revealed absent/reduced F-waves on the affected side.
Findings:
- Unilateral F-wave alterations suggest asymmetrical alpha motor neuron excitability.
- Absence of peripheral nerve or structural lesions points to central dysfunction.
- This case highlights F-wave abnormalities in FND.
Implications:
- Findings suggest potential central control dysfunction in FND.
- Further research with larger cohorts and additional electrophysiological measures is warranted.
- This case contributes to understanding FND pathophysiology.
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