Basal Ganglia Diseases [Disease/Finding] Movement Disorders [Disease/Finding] Parkinsonian Disorders [Disease/Finding] 987649 N0000004168 Parkinsonian Disorders Parkinsonian Syndromes C0242422 D020734 M0328250 A group of disorders which feature impaired motor control characterized by bradykinesia, MUSCLE RIGIDITY; TREMOR; and postural instability. Parkinsonian diseases are generally divided into primary parkinsonism (see PARKINSON DISEASE), secondary parkinsonism (see PARKINSON DISEASE, SECONDARY) and inherited forms. These conditions are associated with dysfunction of dopaminergic or closely related motor integration neuronal pathways in the BASAL GANGLIA. Parkinsonian Syndrome Parkinsonian Disorders C8514 32798002 Parkinsonism Parkinsonian Diseases