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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.
Signs you’re about to pass out: Passing out with absolutely no warning is uncommon, but when it happens, doctors worry about heart rhythm problems — a more serious cause of fainting, McGowan says.
Presyncope describes lightheadedness or feeling faint; the name relates to syncope, which is actually fainting. Disequilibrium is the sensation of being off balance and is most often characterized by frequent falls in a specific direction. This condition is not often associated with nausea or vomiting.
Syncope ((syncope ⓘ), commonly known as fainting or passing out, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. [1] It is caused by a decrease in blood flow to the brain , typically from low blood pressure . [ 1 ]
Episodes of vasovagal syncope are typically recurrent and usually occur when the predisposed person is exposed to a specific trigger. Before losing consciousness, the individual frequently experiences early signs or symptoms such as lightheadedness, nausea, the feeling of being extremely hot or cold (accompanied by sweating), ringing in the ears, an uncomfortable feeling in the heart, fuzzy ...
Micturition syncope or post-micturition syncope is the name given to the human phenomenon of fainting shortly after or during urination.The underlying cause is not fully understood, but it may be a result of vasovagal response, postural hypotension, or a combination thereof.
Heat syncope is fainting or dizziness as a result of overheating (syncope is the medical term for fainting). It is a type of heat illness. The basic symptom of heat syncope is fainting, with or without mental confusion. [1] Heat syncope is caused by peripheral vessel dilation, resulting in diminished blood flow to the brain and dehydration.
Syncope (medicine), also known as fainting or passing out, a loss of consciousness; Syncope (phonology), the loss of one or more sounds, particularly an unstressed vowel, from the interior of a word; Syncopation, a musical effect caused by off-beat or otherwise unexpected rhythms; Syncopation (dance), or syncopated step, a step on an unstressed ...