Amyotrophic lateral sclerosis is characterized by

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Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease that affects both upper and lower motor neurons, leading to muscle weakness, atrophy, and ultimately paralysis. Upper motor neuron signs include hyperreflexia, spasticity, and muscle stiffness, while lower motor neuron signs include muscle weakness, atrophy, and fasciculations. Therefore, both upper and lower motor neuron signs and symptoms are present in ALS.

Amyotrophic Lateral Sclerosis Is Characterized by