Pyramidal involvement, cerebellar ataxia and urinary disturbances are common. Less frequent findings include sleep disorders and dysautonomia. Fluctuations may occur.

• 常见的有锥体系受累、小脑性共济失调和排尿困难。次常见的包括睡眠障碍和家族性自主神经机能异常。可能会出现症状波动。