Gabapentin for Carpal Tunnel Syndrome

Inclusion Criteria: * Sensory symptoms over median nerve distribution for more than three months. * Confirmatory electrophysiologic results defined as prolonged median nerve distal motor latencies (DML) \> 4 ms or median-ulnar palmer sensory latency differences \> 0.5 ms. Exclusion Criteria: * Patients with evidence of severe CTS: fibrillation potentials or reinnervation on needle examination of the abductor pollicis brevis muscle or clinical examination showing wastage of the thenar muscles. (These patients were referred for surgical decompression on presentation.) * Clinical or electrophysiological evidence of accompanying conditions that could mimic CTS or interfere with its evaluation, such as proximal median neuropathy, cervical radiculopathy, or significant polyneuropathy. * Known epilepsy. * Patients who have received previous steroid injection or oral steroid therapy for CTS.