Upbeat Nystagmus: Causes & Reasons

Possible Causes for Upbeat Nystagmus

Autosomal Dominant Congenital Nystagmus Type 4

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Motor Imbalance Congential Spasmus Nutans Latent nystagmus Ataxic nystagmus Downbeat nystagmus Upbeat nystagmus Convergence retraction nystagmus See-Saw nystagmus Periodic [slideshare.net]

0000640 Nonprogressive 0003680 Strabismus Cross-eyed Squint Squint eyes [ more ] 0000486 Upbeat nystagmus 0011477 Showing of 7 | Last updated: 7/1/2019 If you need medical [rarediseases.info.nih.gov]

Parinaud Syndrome

Convergence often increases downbeat nystagmus and can convert upbeat nystagmus into downbeat nystagmus. [dizziness-and-balance.com]

In some instances, patients purposefully attempt to reduce their nystagmus by habitually converging creating the so-called "nystagmus blockage syndrome" (Von Noorden, 1980 [dizziness-and-balance.com]

Central Positional Vertigo

The presumed pathophysiology for the upbeating nystagmus is thought to be the opposite of that for the downbeating nystagmus. [mhmedical.com]

Upbeating Vertical Nystagmus • Two varieties: • Large amplitude nystagmus that increases in intensity with upward gaze. • Suggestive of a lesion of the anterior vermis of [slideshare.net]

If the fast phase is toward the left, then it is named left horizontal nystagmus. If the fast phase is upwardly, then it is named upbeat nystagmus[ref2][ref3]. [teddybrain.wordpress.com]

Pineal Gland Neoplasm

The management and outcome of 21 patients with tumors in the pineal region are reviewed. Nineteen patients underwent direct surgical approach. The identified tumors included: 5 germinomas, 1 atypical teratoma, 2 mature teratomas, 1 mixed tumor, 3 pineoblastomas, 1 pineocytoma, 2 gliomas, 1 cordoma, 2 cyst and 1[…] [revistaneurocirugia.com]

Hereditary Nystagmus

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Upbeat jerk nystagmus. Upbeat nystagmus is less frequent than downbeat nystagmus. [neuroophthalmology.ca]

Downbeat Nystagmus Upbeat Nystagmus Upbeat nystagmus can produce vertical oscillopsia, but the nystagmus resolves spontaneously; long-term treatment is only required if it [webeye.ophth.uiowa.edu]

Pineal Gland Dysfunction

Advanced Search Help Advanced search lets you search selected properties of the classification. You could search all properties or a selected subset only First, you need to provide keywords in the Search Text field then check the properties that you'd like to include in the search. The system will search for the[…] [icd.who.int]

Benign Paroxysmal Positional Vertigo

We present a case of benign paroxysmal positional vertigo (BPPV) with positive Dix-Hallpike bilaterally, but also with upbeat purely vertical nystagmus in the straight back [ncbi.nlm.nih.gov]

The response rate after 1 week, defined as absence of positional vertigo and torsional/upbeating nystagmus on positional testing, was 95% in the MEP group (n = 37) vs 58% [ncbi.nlm.nih.gov]

Both exhibited left torsion upbeating nystagmus in the left Dix-Hallpike (DH) test and complaints of vertigo with reproduction of their symptoms, indicating BPPV. [ncbi.nlm.nih.gov]

Spasmus Nutans

</li></ul><ul><li>Upbeat nystagmus </li></ul><ul><li>Convergence retraction nystagmus </li></ul><ul><li>See-Saw nystagmus </li></ul><ul><li>Periodic alternating nystagmus [slideshare.net]

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Upbeat nystagmus 44. [slideshare.net]

Familial Progressive Vestibulocochlear Dysfunction

Downbeat or upbeat nystagmus occur with SCA6 (1052). There are reductions in pursuit but not in VOR or, surprisingly, VOR-cancellation (1053). [neuroophthalmology.ca]

[…] a Video of a case of upbeating nystagmus due to Wernicke's encephalopathy. [tchain.com]

Dysfunction of central vestibular pathways also causes downbeat (1011-1013) and less commonly upbeat nystagmus (1009). Nystagmus may be constant or intermittent (1018). [neuroophthalmology.ca]

Brain Stem Disorder

Some of these patients have upbeating nystagmus supine, often confused with BPPV. [dizziness-and-balance.com]

Upbeat nystagmus may occur. Small vessel disease (diabetes, hypertension, hypercholesterolemia) is the usual cause. Pontine hyperintense lesions. [tchain.com]

Upbeat nystagmus and the ventral tegmental pathway of the upward vestibulo-ocular reflex. Neurology 1988;38:1329-1330. 3. Bhidayasiri R, Plant GT, Leigh RJ. [neuroophthalmology.ca]

Superior Semicircular Canal Dehiscence

and Valsalva-induced upbeat jerk nystagmus. • Superior semicircular canal dehiscence syndrome is caused by missing bone over the superior aspect of a semicircular canal, [medlink.com]

Upbeating nystagmus provoked by vibration over the mastoid of person with left sided SCD. Image courtesy of Dr. Dario Yacovino. [dizziness-and-balance.com]

[…] superior semicircular canal dehiscence may have vertical oscillopsia and impaired vision during locomotion, disequilibrium, spontaneous pulse-synchronous vertical pendular nystagmus [medlink.com]

Vestibular Nystagmus

The presumed pathophysiology for the upbeating nystagmus is thought to be the opposite of that for the downbeating nystagmus. [fadavispt.mhmedical.com]

Our data indicate that the effects of increased gravity load include a prolonged decay time constant of upbeat nystagmus and a subject-dependent persisting upbeat nystagmus [ui.adsabs.harvard.edu]

Upbeat nystagmus 44. [slideshare.net]

Fixation Nystagmus

Horizontal nystagmus ranged from 1.3°/s to 27.3°/s, the upbeat nystagmus component ranged from 1.1°/s to 10.9°/s (n = 17) and the downbeat nystagmus component ranged from [ncbi.nlm.nih.gov]

Glasauer S, Kalla R, Büttner U, Strupp M, Brandt T. 4‐Aminopyridine restores visual ocular motor function in upbeat nystagmus. [ncbi.nlm.nih.gov]

Fifteen patients were in common, that is, they had both a horizontal and a vertical component of nystagmus greater than 1°/s. [ncbi.nlm.nih.gov]

X-Linked Congenital Nystagmus Type 5

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Upbeat jerk nystagmus. Upbeat nystagmus is less frequent than downbeat nystagmus. [neuroophthalmology.ca]

periodic alternating nystagmus, upbeat nystagmus [tandfonline.com]

Convergence Nystagmus

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Upbeat jerk nystagmus. Upbeat nystagmus is less frequent than downbeat nystagmus. [neuroophthalmology.ca]

If the fast phase is toward the left, then it is named left horizontal nystagmus. If the fast phase is upwardly, then it is named upbeat nystagmus[ref2][ref3]. [teddybrain.wordpress.com]

Autosomal Dominant Congenital Nystagmus 7

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Motor Imbalance Congential Spasmus Nutans Latent nystagmus Ataxic nystagmus Downbeat nystagmus Upbeat nystagmus Convergence retraction nystagmus See-Saw nystagmus Periodic [slideshare.net]

Upbeat Nystagmus Upbeat nystagmus that is present only in upgaze and is associated with symmetrical, horizontal, gaze-paretic nystagmus is usually a type of gaze-paretic nystagmus [medtextfree.wordpress.com]

Mitochondrial DNA Depletion Syndrome Type 8

Primary position upbeat nystagmus has also been described in WE.26 In some cases, the upbeat nystagmus switched to permanent downbeat nystagmus.27–31 Upbeat nystagmus has [dovepress.com]

Conversion of upbeat to downbeat nystagmus in Wernicke encephalopathy. [dovepress.com]

Primary position upbeat nystagmus with special reference to alteration to downbeat nystagmus. Acta Otolaryngol Suppl. 1996;552:43–46. 29. [dovepress.com]

Wernicke Encephalopathy

Eye-movement abnormalities reported in Wernicke’s encephalopathy include gaze-evoked nystagmus, spontaneous upbeat nystagmus, and horizontal or vertical ophthalmoplegia. [nejm.org]

Conspicuous neurologic signs were upbeat nystagmus and ophthalmoplegia, indicating brainstem involvement. [doi.org]

An examination revealed spontaneous upbeat nystagmus ( Video 1 ), gaze-evoked nystagmus ( Video 2 ), and gait ataxia. She had no ophthalmoplegia. [nejm.org]

Congenital Nystagmus 2, Autosomal Dominant

The method disclosed the presence of binocular elliptical pendular nystagmus in two patients and upbeat nystagmus in all three patients. [pediatricneurologybriefs.com]

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Motor Imbalance  Congential  Spasmus Nutans  Latent nystagmus  Ataxic nystagmus  Downbeat nystagmus  Upbeat nystagmus  Convergence retraction nystagmus  See-Saw nystagmus [slideshare.net]

Autosomal Dominant Congenital Nystagmus 3

Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN). [tchain.com]

Downbeat or upbeat nystagmus occur with SCA6 (1052). There are reductions in pursuit but not in VOR or, surprisingly, VOR-cancellation (1053). [neuroophthalmology.ca]

Congenital Nystagmus

Seesaw nystagmus: clonazepam, alcohol, or memantine Upbeat nystagmus: 4-aminopyridine, memantine, or baclofen Acquired periodic alternating nystagmus: memantine or baclofen [nvisioncenters.com]

The resulting nystagmus is often named as a gross description of the movement, e.g. downbeat nystagmus, upbeat nystagmus, seesaw nystagmus, periodic alternating nystagmus. [en.wikipedia.org]

Familial Congenital Palsy of Trochlear Nerve

Nystagmus Syndrome Latent Nystagmus - Acquired Vertical Upbeat Primary Position Gaze Evoked Downbeat Primary Position Gaze Evoked Horizontal Primary Position Gaze Evoked Special [repository.countway.harvard.edu]

FRCP Harvard Medical School Upbeat Nystagmus Shirley H. Wray, M.D. Ph.D. FRCP Harvard Medical School Visual Neglect Shirley H. Wray, M.D. Ph.D. [repository.countway.harvard.edu]

FRCP Harvard Medical School Paraneoplastic Upbeat Nystagmus Shirley H. Wray, M.D. Ph.D. FRCP Harvard Medical School Parasellar Meningioma Shirley H. Wray, M.D. Ph.D. [repository.countway.harvard.edu]

Internal Auditory Artery Occlusion

Some of these patients have upbeating nystagmus supine, often confused with BPPV. [dizziness-and-balance.com]

Upbeat nystagmus may occur (as also occurs in pontine white matter disorders, see above). [dizziness-and-balance.com]

Increased white matter signal on Flair in pons, associated with upbeating nystagmus and ataxia. [dizziness-and-balance.com]

Lateral Medullary Syndrome

Positional testing was abnormal due to the ongoing nystagmus, but there was also a brief upbeating nystagmus. Headshaking provoked a very strong reversal of nystagmus. [dizziness-and-balance.com]

A variety of eye movement abnormalities are associated with lateral medullary syndrome that includes skew deviation, primary position horizontal/torsional/upbeat nystagmus [annalsofian.org]

Vertical gaze-evoked nystagmus is frequent, most commonly an upbeat nystagmus in upgaze (749,753,754). [web.archive.org]

Vestibulocerebellar Ataxia

It then deals with clinically most relevant forms of nystagmus, in particular downbeat and upbeat nystagmus, along with their pathophysiology and current therapy. [onlinelibrary.wiley.com]

Google Scholar | Crossref | Medline Glasauer, S., Kalla, R., Buttner, U., Strupp, M., Brandt, T. ( 2005 ) 4-Aminopyridine restores visual ocular motor function in upbeat nystagmus [journals.sagepub.com]

Nystagmus – tortional & upbeating. Benign Paroxysmal Position Position(ing) Vertigo BPPV  Vestibular nerve • Diseases affecting the cochlear nerve in petrous bone, e.g. [slideshare.net]

Medial Medullary Syndrome

Bowtie and upbeat nystagmus evolving into hemi-seesaw nystagmus in medial medullary infarction: possible anatomic mechanisms. Neurology 2004 ; 62 : 663 –665. 40. [cambridge.org]

Brain Stem Hemorrhage

Some of these patients have upbeating nystagmus supine, often confused with BPPV. [dizziness-and-balance.com]

Upbeat nystagmus may occur (as also occurs in pontine white matter disorders, see above). [dizziness-and-balance.com]

Increased white matter signal on Flair in pons, associated with upbeating nystagmus and ataxia. [dizziness-and-balance.com]

Infantile Symmetrical Thalamic Degeneration

Upbeat jerk nystagmus. Upbeat nystagmus is less frequent than downbeat nystagmus. [neuroophthalmology.ca]

[…] agents worsen upbeat nystagmus (1295). [neuroophthalmology.ca]

Toxic exposure is infrequent: gaze-evoked upbeat nystagmus is more common than primary position upbeat nystagmus with drug toxicity (1351). [neuroophthalmology.ca]

Benedict Syndrome

Some of these patients have upbeating nystagmus supine, often confused with BPPV. [dizziness-and-balance.com]

– spontaneous downbeat vertical nystagmus or upbeat vertical nystagmus in primary forward gaze can occur, and normal optokinetic nystagmus may be dampened or disrupted (* [lifeinthefastlane.com]

In rare instances, upbeat nystagmus may be present [ 173 ]. A crossed motor hemiparesis (hemiplegia cruciata) is an extremely rare occurrence [ 39 ]. [neupsykey.com]

Brain Stem Infarction

Some of these patients have upbeating nystagmus supine, often confused with BPPV. [dizziness-and-balance.com]

Upbeat nystagmus may occur. Small vessel disease (diabetes, hypertension, hypercholesterolemia) is the usual cause. Pontine hyperintense lesions. [tchain.com]

Upbeat nystagmus may occur (as also occurs in pontine white matter disorders, see above). [dizziness-and-balance.com]