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Patients describe:

 Band‐like sensations, around trunk or limbs

 Limb clumsiness, deadness

 Numbness and burning

 Electric shock‐like sensations.

Joint position sense, vibration, light touch and two‐point discrimination become diminished below the lesion. Stamping gait and pseudochorea of the outstretched hands are products of failing position sense.

Lhermitte’s sign is a sudden electrical sensation down the back, into the limbs produced by bending the head forward. Lhermitte’s suggests posterior column damage or occasionally caudal medulla. Lhermitte’s is seen in:

 MS, typically in exacerbations

 Cervical myelopathy, radiation myelopathy, trauma

 Subacute combined degeneration of the cord

 Occasionally: Behçet’s, Chiari malformations.