This is an image preview.
Start a Free Account
to view the full image.

Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
Listen to MedLink on the go with Audio versions of each article.

Spinocerebellar ataxia type 17

This video demonstrates a patient with spinocerebellar ataxia type 17. She has left foot chorea. There are low-amplitude myoclonic jerks involving multiple body regions, which are more prominent when performing manual tasks, such as the finger following test in this video. She has a prominent, wide-based ataxic gait. (Contributed by Dr. Pichet Termsarasab.)