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As the upper and lower motor neurons degenerate, the muscles they control gradually weaken and waste away, leading to paralysis.
With few exceptions, motor weakness fits into either an upper motor neuron or lower motor neuron pattern (Table 1).
Trauma at these levels or disruption of the lower motor neurons (LMNs) is contraindicated for phrenic nerve pacing.
About ALS ALS is a progressive neurodegenerative disease that usually attacks both upper and lower motor neurons and causes degeneration throughout the brain and spinal cord.
ALS is a neurodegenerative disease that usually attacks both upper and lower motor neurons and causes degeneration throughout the brain and spinal cord, according to the ALS Association Web site.
Ultimately required for diagnosis are signs and symptoms of both upper and lower motor neuron involvement attributable to no other causes.
MNDs involving the upper and lower motor neurons are heterogeneous group of syndromes with various clinical presentations, most with poor prognosis.
Neurologic examination revealed that the patient had right lower motor neuron facial nerve palsy, assessed as grade III on the House-Brackmann scale.