Neupsy Key

INTRODUCTION Dystonia is defined as a syndrome with sustained muscle contractions that often result in twisting and repetitive movements and abnormal postures. Lacking a curative therapy, the treatment of dystonia…

Chorea is a hyperkinetic syndrome characterized by brief, abrupt involuntary movements resulting from a continuous flow of random muscle contractions. The pattern of movement may sometimes appear playful, conveying a…

INTRODUCTION The hereditary ataxias comprise a wide spectrum of genetically determined disorders with ataxia as the prominent symptom. In most of these disorders, ataxia is due to degeneration of the…

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INTRODUCTION Multiple system atrophy (MSA) is a rare and presumably sporadic neurodegenerative disorder usually occurring during the 6th decade and clinically characterized by a combination of parkinsonism, autonomic, cerebellar, or…