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Amyotrophic lateral sclerosis with dementia

F Cavalleri¹, E De Renzi

¹Neurological Department, University of Modena, Italy.

Acta Neurologica Scandinavica

|May 1, 1994

Summary

This study reports on four patients with amyotrophic lateral sclerosis (ALS) and dementia, noting that mental symptoms often preceded motor signs. Different cognitive impairments were observed, alongside early upper motor neuron involvement.

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Area of Science:

Neuroscience
Neurology
Cognitive Science

Background:

Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease typically affecting motor neurons.
Dementia can co-occur with ALS, presenting complex diagnostic and management challenges.
Understanding the interplay between cognitive and motor decline in ALS is crucial for patient care.

Observation:

Four patients with co-occurring ALS and dementia were analyzed.
Mental symptoms, including various cognitive impairments, were observed to precede motor deficits in these patients.
Neuropsychological testing revealed distinct patterns of cognitive decline, such as frontal dementia, aphasia-apraxia-amnesia syndrome, and affective blunting.

Findings:

Cognitive impairment patterns varied significantly among the patients.
Early involvement of the upper motor system was a consistent motor finding.
The temporal relationship between cognitive and motor symptoms was investigated.

Implications:

This case series highlights the diverse cognitive profiles that can accompany ALS.
Recognizing early cognitive changes may aid in earlier diagnosis and intervention for ALS patients with dementia.
Further research is needed to elucidate the specific mechanisms linking cognitive and motor degeneration in ALS.

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