Patients with vestibular nystagmus are said to have 'undirectional nystagmus'–that is,
nystagmus unaffected by gaze direction. In contrast, the intensity of a vestibular nystagmus …

Vertigo and dizziness are common complaints encountered in clinical practice. The patient's
history and a thorough otoneurological evaluation are essential for identifying the specific …

Discussion The clinical assessment aims to: establish the presence of true vertigo,
differentiate between vertigo of central or peripheral origins, and to evaluate the need for …

The evaluation of patients with dizziness and imbalance is always challenging and often
frustrating for patient and physician, but recent advances in both bedside and laboratory …

For consistency, the nomenclature used in this chapter will follow that suggested for the
International Classification of Vestibular Disorders for the definitions of vertigo, dizziness …

A fundamental characteristic of peripheral vestibular nystagmus, in particular horizontal
nystagmus, is that it is suppressed by visual fixation. This means that a patient with a vertigo …

The syndrome of acute prolonged vertigo of peripheral origin is commonly called vestibular
neuritis although the pathophysiology is unclear and some have suggested a more …

Head positioning can lead to pathological nystagmus and vertigo. In most instances the
cause is a peripheral vestibular disorder, as in benign paroxysmal positioning vertigo …

Physiological nystagmus stabilizes gaze during head movements and pathological
nystagmus reflects a disorder of the vestibulo-ocular reflex (VOR). Pathological nystagmus …

The history usually provides the key information for distinguishing between peripheral and
central causes of vertigo. Probably the only central lesion that could masquerade as a …