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When experiencing an intention tremor, one often overshoots or undershoots one's target, a condition known as dysmetria. [1] [2] Intention tremor is the result of dysfunction of the cerebellum, particularly on the same side as the tremor in the lateral zone, which controls visually guided movements. Depending on the location of cerebellar ...
Example of writing by a patient with Parkinson's disease, possibly showing micrographia in addition to other abnormal characteristics. published by Jean-Martin Charcot in 1879: Text accompanying image stated, "The strokes forming the letters are very irregular and sinuous, whilst the irregularities and sinuosities are of a very limited width ...
Parkinsonism is a clinical syndrome characterized by tremor, bradykinesia (slowed movements), rigidity, and postural instability. [1] [2] Both hypokinetic (bradykinesia and akinesia) as well as hyperkinetic (cogwheel rigidity and tremors at rest) features are displayed by Parkinsonism. [3]
Parkinson’s disease, which is lifelong, progressive, and has no cure, occurs when brain cells that make dopamine, a chemical that coordinates movement, stop working or die, according to the ...
Cerebellar tremor (also known as intention tremor) is a slow, broad tremor of the extremities that occurs at the end of a purposeful movement, such as trying to press a button or touching a finger to the tip of one's nose. In classic cerebellar tremor, a lesion on one side of the brain produces a tremor in that same side of the body that ...
Parkinson's disease (PD), or simply Parkinson's, is a neurodegenerative disease primarily of the central nervous system, affecting both motor and non-motor systems. Symptoms typically develop gradually, with non-motor issues becoming more prevalent as the disease progresses.
This means that it is distinct from a resting tremor, such as that caused by Parkinson's disease, which is not correlated with movement. [7] Unlike Parkinson's disease, essential tremor may worsen with action. Essential tremor is a progressive [8] [9] [10] neurological disorder, and the most common movement disorder. Though not life-threatening ...
Parkinson-plus syndromes (PPS) are a group of neurodegenerative [1] diseases featuring the classical features of Parkinson's disease (tremor, rigidity, akinesia/bradykinesia, and postural instability) with additional features that distinguish them from simple idiopathic Parkinson's disease (PD). Parkinson-plus syndromes are either inherited ...
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