Main clinical features
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neurodegenerative disorder characterized by adult or late adult onset of cognitive impairment, behavioral abnormalities, and speech apraxia and/or upper and lower motor neuron signs
progressive muscle weakness and atrophy, hyporeflexia, dysarthria, bulbar weakness, fasciculations, and hyperreflexia.; electromyography showed fibrillations, suggesting active denervation
also speech apraxia, visuoconstructional defects, executive dysfunction, and behavioral disorders with onset between 70 and 75 years of age |