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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 ...
0.3–1.9 per 1,000 [ 1] Ménière's disease ( MD) is a disease of the inner ear that is characterized by potentially severe and incapacitating episodes of vertigo, tinnitus, hearing loss, and a feeling of fullness in the ear. [ 3][ 4] Typically, only one ear is affected initially, but over time, both ears may become involved. [ 3]
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An epidemic (from Greek ἐπί epi "upon or above" and δῆμος demos "people") is the rapid spread of disease to a large number of hosts in a given population within a short period of time. For example, in meningococcal infections , an attack rate in excess of 15 cases per 100,000 people for two consecutive weeks is considered an epidemic.
Peripheral vertigo is caused by a problem in the part of the inner ear that controls balance. (This is the nerve between the inner ear and the brain stem.) (This is the nerve between the inner ear ...
Dizziness is an imprecise term that can refer to a sense of disorientation in space, vertigo, or lightheadedness. [ 1] It can also refer to disequilibrium [ 2] or a non-specific feeling, such as giddiness or foolishness. [ 3] Dizziness is a common medical complaint, affecting 20–30% of persons. [ 4] Dizziness is broken down into four main ...
Labyrinthitis. Labyrinthitis is inflammation of the labyrinth, a maze of fluid-filled channels in the inner ear. Vestibular neuritis is inflammation of the vestibular nerve (the nerve in the ear that sends messages related to motion and position to the brain). [ 2][ 3][ 4] Both conditions involve inflammation of the inner ear. [ 5]
Disease outbreak. In epidemiology, an outbreak is a sudden increase in occurrences of a disease when cases are in excess of normal expectancy for the location or season. It may affect a small and localized group or impact upon thousands of people across an entire continent. The number of cases varies according to the disease-causing agent, and ...