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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 ...
[3] [1] Syncope may also be associated with a short episode of muscle twitching. [1] [3] Psychiatric causes can also be determined when a patient experiences fear, anxiety, or panic; particularly before a stressful event, usually medical in nature. [4] [5] When consciousness and muscle strength are not completely lost, it is called presyncope. [1]
Laughter-induced syncope is an unusual but recognized form of situational syncope (fainting) likely to have a similar pathophysiological origin to tussive syncope. One reported case occurred while a patient was watching the television show Seinfeld , and was given the name Seinfeld syncope .
Situational syncope occurs when situations affect the nervous system, such as anxiety, fear, pain, dehydration, hyperventilation, and the use of alcohol or drugs. [3] The body falls to the ground when one faints or has a black-out because it makes it easier for oxygen blood to reach the brain. [4]
Up to 80% of those with BII phobia report either syncope or pre-syncope as a symptom when exposed to a trigger. [ 3 ] Other symptoms that may evolve when exposed to phobic triggers include extreme chest discomfort, tunnel vision, becoming pale, [ 4 ] shock, vertigo, diaphoresis (profuse sweating), nausea, and in very rare cases asystole ...
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.
Reflex asystolic syncope (RAS) is a form of syncope encountered mainly, but not exclusively, in young children. Reflex anoxic seizures are not epileptic seizures or epilepsy . [ 1 ] This is usually a consequence of a reduction in cerebral perfusion by oxygenated blood .
Orthostatic syncope refers to syncope resulting from a postural decrease in blood pressure, termed orthostatic hypotension. [1]Orthostatic hypotension occurs when there is a persistent reduction in blood pressure of at least 20mmHg systolic or 10mmHg diastolic within three minutes of standing or being upright to 60 degrees on the head-up tilt table.