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Lightheadedness is a common and typically unpleasant sensation of dizziness [1] or a feeling that one may faint. The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring. In addition to dizziness, the individual may feel as though their head is weightless. The individual may also feel as though the room is "spinning ...
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 ...
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 moved. [2]
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]
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] Episodes generally last from 20 minutes ...
Orthostatic hypotension is defined as a fall in systolic blood pressure of at least 20 mmHg or the diastolic blood pressure of at least 10 mmHg between the supine reading and the upright reading. Also, the heart rate should be measured for both positions.
Chronic subjective dizziness. The term chronic subjective dizziness (CSD) is used to describe a commonly encountered type of dizziness that is not easily categorized into one of several other types, and for which the physical examination is typically normal. Patients with CSD frequently initially suffer a sudden injury of some sort to their ...
Motion sickness occurs due to a difference between actual and expected motion. [1][2][4] Symptoms commonly include nausea, vomiting, cold sweat, headache, dizziness, tiredness, loss of appetite, and increased salivation. [1][5] Complications may rarely include dehydration, electrolyte problems, or a lower esophageal tear.