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TitleDescriptionSubject
1 Idiopathic downbeat nystagmus exacerbated with positional maneuversThis is a 45-yo-woman with vertical oscillopsia for 6+ months, found to have downbeat nystagmus on examination. She mainly complained of dizziness and oscillopsia when laying down. She was found to have a significant exacerbation in her baseline downbeat nystagmus with straight head hanging, and in ...Downbeat nystagmus, Jerk nystagmus, Central positional nystagmus
2 Idiopathic downbeat nystagmus exacerbated with positional maneuvers - Part 2: patient is now on 4-aminopyridineThis is a 45-yo-woman presented in "Idiopathic downbeat nystagmus exacerbated with positional maneuvers". This video was taken after the patient had been on 4-aminopyridine for 3 months. There was marked improvement in subjective oscillopsia and objective downbeat nystagmus. The strong positional co...Downbeat nystagmus, Jerk nystagmus, Central positional nystagmus
3 Positional downbeat nystagmus mimicking anterior canal BPPVAlthough positional downbeat nystagmus (pDBN) can indicate the rare anterior canal variant of benign paroxysmal positional vertigo, central mimics are common causes of pDBN. pDBN may be seen in multiple system atrophy (MSA), or seen with posterior fossa lesions, with a common example being a stroke ...Cerebellar, Jerk Nystagmus, Downbeat Nystagmus, Central Positional Nystagmus
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