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Parkinson's disease (PD) is a neurodegenerative disease affecting both the central and peripheral nervous systems, characterized by the loss of dopamine-producing neurons in the substantia nigra region of the brain. [5]
Parkinsonism is a clinical syndrome characterized by the four motor symptoms found in Parkinson's disease: tremor, bradykinesia (slowed movements), rigidity, and postural instability. [ 1 ] [ 2 ] Parkinsonism gait problems can lead to falls and serious physical injuries.
Although Parkinson's disease is primarily a disease of the nigrostriatal pathway and not the extrapyramidal system, loss of dopaminergic neurons in the substantia nigra leads to dysregulation of the extrapyramidal system. Since this system regulates posture and skeletal muscle tone, a result is the characteristic bradykinesia of Parkinson's.
Pathology is the medical discipline that describes conditions typically observed during a disease state, whereas physiology is the biological discipline that describes processes or mechanisms operating within an organism. Pathology describes the abnormal or undesired condition (symptoms of a disease), whereas pathophysiology seeks to explain ...
A 2012 study suggests that players in the National Football League are three times more likely to die from neurodegenerative diseases, including Alzheimer's and Parkinson's diseases, than the general US population. [43] A 2018 study found 56% increase in risk of Parkinson's disease among US military veterans suffered traumatic brain injury. [42]
Dopamine agonists are mainly used in the treatment of Parkinson's disease. [2] The cause of Parkinson's is not fully known but genetic factors, for example specific genetic mutations, and environmental triggers have been linked to the disease. [4] In Parkinson's disease dopaminergic neurons that produce the neurotransmitter dopamine in the ...
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