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Vertigo. Vertigo is a condition in which a person has the sensation that they are moving, or that objects around them are moving, when they are not. [ 1] Often it feels like a spinning or swaying movement. [ 1][ 2] It may be associated with nausea, vomiting, perspiration, or difficulties walking. [ 2] It is typically worse when the head is ...
Benign paroxysmal positional vertigo ( BPPV) is a disorder arising from a problem in the inner ear. [ 3] Symptoms are repeated, brief periods of vertigo with movement, characterized by a spinning sensation upon changes in the position of the head. [ 1] This can occur with turning in bed or changing position. [ 3]
Vertebrobasilar insufficiency ( VBI) describes a temporary set of symptoms due to decreased blood flow ( ischemia) in the posterior circulation of the brain. The posterior circulation supplies the medulla, pons, midbrain, cerebellum and (in 70-80% of people) supplies the posterior cerebellar artery to the thalamus and occipital cortex. [ 1]
Tullio phenomenon, sound-induced vertigo, dizziness, nausea or eye movement was first described in 1929 by the Italian biologist Prof. Pietro Tullio.(1881–1941) [1] [2] During his experiments on pigeons, Tullio discovered that by drilling tiny holes in the semicircular canals of his subjects, he could subsequently cause them balance problems when exposed to sound.
Vertigo is a medically recognized term for the symptom of a vestibular system disturbance. It may include a feeling of rotation or illusory sensations of motion or both. The general term dizziness is used by nonmedical people for those symptoms but often refers to a feeling of light-headedness, giddiness, drowsiness, or faintness, all of which must be differentiated from true vertigo, [3 ...
Illusions of self-motion. Diagram of possible illusions of self-motions (vections). Adapted from [ 1] Illusions of self-motion (or "vection") occur when one perceives bodily motion despite no movement taking place. One can experience illusory movements of the whole body or of individual body parts, such as arms or legs.
Pathophysiology (or physiopathology) is a branch of study, at the intersection of pathology and physiology, concerning disordered physiological processes that cause, result from, or are otherwise associated with a disease or injury. Pathology is the medical discipline that describes conditions typically observed during a disease state, whereas ...
Unterberger test. The Unterberger test, also Unterberger's test and Unterberger's stepping test, is a test used in otolaryngology to help assess whether a patient has a vestibular pathology. [ 1] It is not useful for detecting central ( brain) disorders of balance. [ 2]