Abstract
Neuromyotonia is characterized by motor, sensory, and autonomic features along with characteristic electrophysiologic findings, resulting from hyperexcitability of the peripheral nerves. We describe the case of a 36-year-old man, who presented with the disabling symptoms suggestive of focal neuromyotonia involving both the lower limbs. His neurological examination revealed continuous rippling of both the calf muscles with normal power, reflexes, and sensory examination. Electrophysiology revealed spontaneous activity in the form of doublets, triplets, and neuromyotonic discharges along with the neurogenic motor unit potentials in bilateral L5, S1 innervated muscles. Magnetic resonance imaging lumbosacral spine revealed lumbar intervertebral disc protrusion with severe foraminal and spinal canal stenosis. Patient had good response to steroids and carbamazepine. The disabling focal neuromyotonia, occurring as a result of chronic active radiculopathy, brought the patient to medical attention. Patient responded to medical management.
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