Upgaze nystagmus is a Central vestibular disorders -Pitch plane disorder
- Nystagmus with fast phase upwards in primary position it worsens on upward gaze
Where is the site of lesion?
- The site of lesion is Tegmentum of the pontomesencephalic region (either the SCP orVTT)
SCP - superior cerebellar peduncle or VTT - vestibulotegmental tract.
- Pontomedullary junction (NPH)
What are the causes of Upbeat nystagmus ?
- CVD, MS.
- Cerebellar degeneration.
- Wernicke's encephalopathy
- Encephalitis
Reference Notes
What is See-Saw Nystagmus ?
What are the causes of Acquired Pendular nystagmus ?
What is Convergence-Retraction Nystagmus ?
Dissociated Jerk Nystagmus and causes
What is Rebound nystagmus and its causes?
What is Bruns's nystagmus?
What is Gaze evoked nystagmus?
Down-beat nystagmus and its causes
Upbeat nystagmus and its causes
What is the basic Pathophysiology of Nystagmus
Alexanders law in Nystagmus - A brief
