Examples of pleasantry in a sentence. â 1 how are youâ is merely a social pleasantry. 2  his after-dinner speeches usually include the sort of gentle pleasantry that raises a chuckle.
Parkinsonâs disease (PD) is the most common neurodegenerative cause of parkinsonism, a clinical syndrome characterized by lesions in the basal ganglia, predominantly in the substantia nigra.PD makes up approximately 80% of cases of parkinsonism.arkinsonâs disease (PD) is the most common neurodegenerative cause of parkinsonism, a clinical syndrome characterized by lesions in the basal ganglia, predominantly in the substantia nigra.
Parkinson s disease is a progressive disorder of the central nervous system resulting in a lack of dopamine in the brain, among other changes.Dopamine, a chemical produced by cells in the brain, is necessary for smooth, controlled movement of muscles.he most common initial symptom is tremor. Symptoms of tremor or slowness usually begin on one side of the body, often involving either an arm or leg. Over time, the other limb on the same side and/or limbs on the opposite side are usually affected. Mobility may become limited as the disease progresses.