Nystagmus
Eye-movement abnormalities reported in Wernicke’s encephalopathy include gaze-evoked nystagmus, spontaneous upbeat nystagmus, and horizontal or vertical ophthalmoplegia.[nejm.org]
Upbeat nystagmus: clinicoanatomical correlation. J Neurol Neurosurg Psychiatry 1998 ; 65 : 380 –1. Kattah JC, Dagli TF. Compensatory head tilt in upbeating nystagmus.[doi.org]
Lithium-induced periodic alternating nystagmus. Neurology, 60,2003, 344 Central nystagmus (downbeat, upbeat nystagmus, horizontal, torsional) Upbeat nystagmus (UBN).[tchain.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]
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]
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]
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% in[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]
Pineal Gland Neoplasm
ICD.Codes ICD-10-CM (2016) Chapter 2 Section C73-C75 Code C75.3 BILLABLE Billable Code Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis. ICD-10 from 2011 - 2016 C75.3 is a billable ICD code used to specify a diagnosis of malignant neoplasm of pineal gland.[…][icd.codes]
Parinaud Syndrome
To characterize the clinical features, aetiology and management of ophthalmic symptoms in adult patients with Parinaud syndrome. This is a retrospective, non-comparative observational case series. We reviewed 40 consecutive charts of adult patients with the clinical diagnosis of Parinaud syndrome at the Royal[…][ncbi.nlm.nih.gov]
Pineal Gland Dysfunction
The pineal gland was originally believed to be a "vestigial remnant" of a larger organ (much as the appendix is now thought to be a vestigial digestive organ). It was only after the 1960s that scientists discovered that the pineal gland is responsible for the production of melatonin, which is regulated in a circadian[…][liquidprofessionalhcg.com]
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]
Posterior inferior cerebellar artery occlusion
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]
Upbeat nystagmus may occur. Small vessel disease (diabetes, hypertension, hypercholesterolemia) is the usual cause. Pontine hyperintense lesions.[tchain.com]
There was a strong left-beating gaze-evoked nystagmus, and also there was a right-torsional beating torsional nystagmus.[dizziness-and-balance.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]
A jerk nystagmus is usually due to a motor defect that may be induced by brainstem or cerebellar lesions, drug intoxication ( upbeat nystagmus in which the fast phase is in[medical-dictionary.thefreedictionary.com]
Malnutrition
The patient showed upbeating nystagmus and lateral gaze nystagmus with dizziness and ataxia.[doi.org]
nystagmus Upbeat nystagmus is defined as nystagmus with the fast phase beating in an upward direction.[emedicine.medscape.com]
Upbeat Nystagmus Upbeat nystagmus is purely-vertical conjugate nystagmus that manifests itself in primary gaze with slow downdrift of the eyes corrected by fast upward saccade[eyewiki.aao.org]