A progressive, degenerative neurologic disease characterized by a TREMOR that is maximal at rest, retropulsion (i.e. a tendency to fall backwards), rigidity, stooped posture, slowness of voluntary movements, and a masklike facial expression. Pathologic features include loss of melanin containing neurons in the substantia nigra and other pigmented nuclei of the brainstem. LEWY BODIES are present in the substantia nigra and locus coeruleus but may also be found in a related condition (LEWY BODY DISEASE, DIFFUSE) characterized by dementia in combination with varying degrees of parkinsonism. (Adams et al., Principles of Neurology, 6th ed, p1059, pp1067-75)|A neurodegenerative disease that results_from degeneration of the central nervous system that often impairs the sufferer's motor skills, speech, and other functions. (Experimental Factor Ontology, EFO_0002508)
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8 genes associated with the disease parkinsons disease in GWAS and other genetic association datasets from the GAD Gene-Disease Associations dataset.
