Study on Parkinson’s Disease and Parkinson-Plus Syndromes
Study on Parkinson’s Disease and Parkinson-Plus Syndromes
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Original abstract
Parkinson’s disease (PD) is a progressive neurodegenerative disorder caused by the loss of dopamine-producing neurons in the substantia nigra, leading to disrupted signaling in the basal ganglia. This results in motor symptoms such as resting tremor, bradykinesia, rigidity, and postural instability, as well as non-motor symptoms including cognitive decline, mood disorders, sleep disturbances, and autonomic dysfunction. Symptoms typically progress gradually and often respond initially to dopaminergic medications like Levodopa. Parkinson-plus syndromes, or atypical Parkinsonism, include disorders such as multiple system atrophy, progressive supranuclear palsy, corticobasal degeneration, and dementia with Lewy bodies. These conditions share Parkinsonlike motor features but progress more rapidly and often present additional neurological signs, including early cognitive impairment, autonomic failure, gaze abnormalities, and speech or swallowing difficulties. Response to dopaminergic therapy is generally poor, making management more challenging. Accurate differentiation between PD and Parkinson-plus syndromes is essential for prognosis, treatment planning, and optimizing quality of life.