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Lightheadedness can be simply (and most commonly) an indication of a temporary shortage of blood or oxygen to the brain due to a drop in blood pressure, rapid dehydration from vomiting, diarrhea, or fever.
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 ...
Aortic dissection (a tear in the aorta) and cardiomyopathy can also result in syncope. [23] Various medications, such as beta blockers, may cause bradycardia induced syncope. [21] A pulmonary embolism can cause obstructed blood vessels and is the cause of syncope in less than 1% of people who present to the emergency department. [24]
The diagnosis of heat syncope is done during a physical examination. During the physical exam the practitioner will test the blood pressure of the patient, and the pulse. If the patient is experiencing heat syncope the blood pressure will be low, and the pulse will be elevated. Observation of excess sweating will also be a key sign.
Dehydration can lead to high or low blood pressure and a host of other symptoms. It’s important to make sure you are drinking enough water throughout the day to stave off any of the effects of ...
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Orthostatic hypotension can be a side effect of certain antidepressants, such as tricyclics [23] or monoamine oxidase inhibitors (MAOIs) [24] Alcohol can potentiate orthostatic hypotension to the point of syncope. [25] Orthostatic hypotension can also be a side effect of alpha-1 blockers (alpha 1 adrenergic blocking agents).
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