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Progressive supranuclear palsy (PSP) is a late-onset neurodegenerative disease involving the gradual deterioration and death of specific volumes of the brain. [ 1 ] [ 2 ] The condition leads to symptoms including loss of balance , slowing of movement , difficulty moving the eyes , and cognitive impairment . [ 1 ]
They include multiple system atrophy (MSA), progressive supranuclear palsy (PSP), and corticobasal degeneration (CBD). Dementia with Lewy bodies (DLB), may or may not be part of the PD spectrum, but it is increasingly recognized as the second-most common type of neurodegenerative dementia after Alzheimer's disease.
Corticobasal syndrome and degeneration, and progressive supranuclear palsy, are usually distinguished from DLB by history and examination. Motor movements in corticobasal syndrome are asymmetrical. There are differences in posture, gaze and facial expressions in the most common variants of progressive supranuclear palsy, and falling backwards ...
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Eventually, mutism and progressive dementia set in. [2] Parkinsonism can be the first symptom of the disease, and it is noteworthy that some FTDP-17 patients have been misdiagnosed with Parkinson's disease or sporadic progressive supranuclear palsy. However, in some families, the parkinsonism appears later in the progression of the illness or ...
Differentiating early PD from atypical parkinsonian disorders is a major difficulty. In their initial stages, PD can be difficult to distinguish from the atypical neurodegenerative parkinsonisms, including MSA, dementia with Lewy bodies, and the tauopathies progressive supranuclear palsy and corticobasal degeneration.
Progressive supranuclear palsy (PSP) is a type of tauopathy, but the cause is not yet discovered. For PSP unusual phosphorylation for tau protein causes vital protein filaments in the nerve cells to destruct, a phenomenon called "neurofibrillary" degeneration.
The applause sign was first described by Dubois and colleagues in 1995, as “a simple test of motor control that helps to differentiate Progressive supranuclear palsy (PSP) from frontal or striatofrontal degenerative diseases”, [1] but has since appeared in various neurodegenerative conditions involving frontal lobe dysfunction.
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