Upper limb tremor induced by peripheral nerve injury.
We report a patient with proximal right upper limb tremor, secondary to direct peripheral nerve lesion caused by prior thoracic surgery. Electromyography demonstrated neurogenic abnormalities and tremor in muscles innervated by the thoracodorsal and long thoracic nerves. Somatosensory evoked potentials, transcranial magnetic stimulation, and MRI of the cervical and thoracic spine were normal. Tremor persisted in REM and non-REM sleep. These findings suggest a peripheral generator.
Costa
J
J
Department of Neurology, Hospital Santa Maria., Av Prof Egas Moniz., 1649-028 Lisbon, Portugal.
Henriques
R
R
Barroso
C
C
Ferreira
J
J
Atalaia
A
A
de Carvalho
M
M
D001132:Arm / Q000294:innervation / Q000503:physiopathology*; D020516:Brachial Plexus Neuropathies / Q000150:complications* / Q000209:etiology / Q000503:physiopathology; D003714:Denervation / Q000009:adverse effects; D003937:Diagnosis, Differential; D004569:Electroencephalography; D004576:Electromyography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000294:innervation / Q000503:physiopathology*; D009431:Neural Conduction / Q000502:physiology; D009442:Neurilemmoma / Q000473:pathology / Q000601:surgery; D019635:Neurosurgical Procedures / Q000009:adverse effects; D059348:Peripheral Nerve Injuries; D010525:Peripheral Nerves / Q000503:physiopathology; D012021:Reflex, Abnormal / Q000502:physiology; D013908:Thoracotomy / Q000009:adverse effects; D050781:Transcranial Magnetic Stimulation; D014202:Tremor / Q000209:etiology* / Q000503:physiopathology