The objectives of this study are:

• To validate the inter-rater and intra-rater reliability of a new scale for the assessment of ataxia and neurologic dysfunction (STAND)
• To assess common constructs and correlation between STAND subscale items.

There are few validated, comprehensive rating scales for the assessment of ataxia severity. The development of a Scale To assess Ataxia and Neurologic Dysfunction (STAND) would examine and measure as many facets of ataxia as possible. Scale items to be measured include parkinsonism, timed gait analysis, dystonia, neuropathy and peripheral nerve weakness, as well as other areas of clinical manifestation for ataxia. This brief but thorough scale should yield a thorough measurement of ataxia.

Inclusion Criteria:

• Diagnosis of ataxia.
• Male or female between 18 and 80 years of age.
• Subject has voluntarily signed an IRB approved informed consent form to participate in the study after all relevant aspects of the study have been explained and discussed with the subject.

Exclusion Criteria:

• Any illness that in the investigator's opinion preclude participation in this study.
• Subjects with a cardiac pacemaker
• Legal incapacity or limited legal capacity.

Community members, support group members or clinic patients with ataxia.