Spastic Ataxia, Charlevoix-Saguenay Type, also known as autosomal recessive spastic ataxia of charlevoix-saguenay, is related to neuropathy and spastic ataxia, and has symptoms including muscle spasticity, urgency of micturition and scanning speech. An important gene associated with Spastic Ataxia, Charlevoix-Saguenay Type is SACS (Sacsin Molecular Chaperone). Affiliated tissues include retina and eye, and related phenotypes are spasticity and abnormal pyramidal sign