?:definition
|
-
An adult-onset movement disorder with characteristics of bradykinesia, dysarthria and muscle rigidity. To date the disease has been observed in seven individuals in one family. Onset of symptoms is in the fourth to fifth decade of life with mild progressive dysarthria and hypokinesia. Dysdiadochokinesia is also present and muscle tone is slightly increased. Dysfunction and changes of the striatal part of the basal ganglia are visible on magnetic resonance imaging. Caused by mutation in the PDE8B gene (5q13.3-q14.1) and transmitted in an autosomal dominant manner with complete penetrance in the investigated family.
|