Abstract
Parkinson's disease is a progressive neurodegenerative disorder characterized by damage to dopaminergic neurons in the substantia nigra , pars compacta and nigrostriatal pathways. This translates into a low level of dopamine which is responsible for the appearance of specific motor manifestations such as tremors, rigidity, bradykinesia, akinesia and postural instability. The clinical picture of Parkinson's disease is complemented by non-motor symptoms such as affective disorders, psychotic manifestations, neurocognitive disorders, hypnic disorders or autonomic dysfunction.
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