[Familial juvenile parkinsonism with dementia and autonomic failure--a case report].

A case of familial juvenile parkinsonism with dementia, orthostatic hypotension, neurogenic bladder and constipation was reported. He had been in a good health until the age of 28 when a finger tremor occurred on effort to hold hands in a definite position, and disturbances in gait and speech were noted. These symptoms were relieved by levodopa treatment followed by dyskinesia and motor fluctuations. Three years later, he complained of faintness, constipation and urinary frequency. The neurological examination revealed mentally sound male with masked face, tremor and rigidity in his extremities, and short step gait with lateropulsion. Urodynamic study showed uninhibited bladder. In the following years, orthostatic hypotension, dysuria and urinary retention developed gradually. He became mentally loose and was unable to take medicines appropriately. When in the Nishiojiya Byoin National Sanatorium, he tried to snake out the hospital many times. His parents and a brother suffered from Parkinson's disease and juvenile parkinsonism, respectively, suggesting an autosomal dominant inheritance. On admission to our hospital, he was apathetic. He had masked face, bilateral postural tremor, frozen gait and dyskinesia in the right lower extremity. Little bradykinesia or rigidity was noted. His muscle tone and deep tendon reflexes were decreased but neither muscular wasting, weakness, ataxia nor sensory disturbance was observed. Laboratory data including ceruloplasmin, copper, dopamine-beta-hydroxylase and lysosomal enzyme activities were normal except for mild anemia. A cranial CT scan revealed mild cortical atrophy in the frontal and temporal lobes, but nerve conduction study and cortical evoked potentials showed no abnormality. While in the hospital, his mental functions deteriorated to the state of dementia and orthostatic hypotension became apparent.(ABSTRACT TRUNCATED AT 250 WORDS)