Bowel incontinence, Bradykinesia, Brisk reflexes, Cerebellar atrophy, Delayed speech and language development, Dementia, Depression, Difficulty walking, Distal amyotrophy, Distal muscle weakness, Distal sensory impairment, Dysarthria, Dysphagia, Dystonia, Elevated circulating creatine kinase concentration, Emotional lability, Flexion contracture of finger, Frequent falls, Gait disturbance, Generalized hypotonia, Global developmental delay, Hand tremor, Hyperactive deep tendon reflexes, Hyperactive patellar reflex, Hyperreflexia, Hyporeflexia, Impaired vibratory sensation, Impulsivity, Knee flexion contracture, Lewy bodies, Mental deterioration, Motor axonal neuropathy, Muscle weakness, Neurodegeneration, Optic atrophy, Oromandibular dystonia, Parkinsonism, Pes cavus, Poor fine motor coordination, Postural instability, Progressive visual loss, Respiratory insufficiency, Rigidity, Scapular winging, Shuffling gait, Spastic gait, Spastic paraparesis, Spastic paraplegia, Spasticity, Tremor, Urinary incontinence