Most common causes Flashcards
1
Q
convergence spasm
A
function
2
Q
downbeat nystagmus
A
cerebellum (25% Chiari, 25% cerebellar degeneration), 20% are idiopathic
3
Q
upbeat nystagmus
A
cerebellar degeneration 20%, stroke in cerebellum or brainstem 20%
4
Q
torsional nystagmus
A
stroke 40%
5
Q
seesaw nystagmus
A
Baclofen, Clonazepam, Gabapentin, Alcohol
6
Q
PAN
A
Baclofen is tx of choice, often also use prism
7
Q
APN
A
MS
8
Q
Lateropulsion (Wallenberg syndrome)
A
occlusion (infarction) of ipsilateral vertebral artery
9
Q
oculopalatal tremor
A
infarct, hemorrhage
Demyelination is rare
10
Q
bilateral INO
A
MS
11
Q
unilateral INO
A
brainstem infarction
12
Q
one-and-a-half syndrome
A
MS in young; ischemic stroke in old
13
Q
one-sided parapontine reticular formation (PPRF) lesions
A
one-half syndrome
ipsilesional horizontal saccadic palsy
