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Most causes of lightheadedness are not serious and either cure themselves quickly or are easily treated. Keeping a sense of balance requires the brain to process a variety of information received from the eyes , the nervous system , and the inner ears .
Causes range from non-serious to potentially fatal. [1] There are three broad categories of causes: heart or blood vessel related; reflex, also known as neurally mediated; and orthostatic hypotension. [1] Issues with the heart and blood vessels are the cause in about 10% and typically the most serious while neurally mediated is the most common. [1]
The underlying mechanism involves the nervous system slowing the heart rate and dilating blood vessels, resulting in low blood pressure and thus not enough blood flow to the brain. [2] Diagnosis is based on the symptoms after ruling out other possible causes. [3] Recovery from a reflex syncope episode happens without specific treatment. [2]
Feeling lightheaded can also be a sign of low blood sugar, Dr. Shaikh says. This happens because the brain isn’t getting enough glucose, which the brain needs for energy.
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.
Palpitation associated with light-headedness, fainting or near fainting suggest low blood pressure and may signify a life-threatening cardiac dysrhythmia. Palpitation that occurs regularly with exertion suggests a rate-dependent bypass tract or hypertrophic cardiomyopathy. If a benign cause for these concerning symptoms cannot be found at the ...
Light-headed; Dizzy Dizzy – about to black out; Dizzy – with the room spinning around me; My mouth is dry; Nauseated; Sick like I have the flu; like I have to vomit; Short of breath; Sleepy; Sweaty; Thirsty; Tired; Weak; I can't: Breathe normally; Hear normally: losing hearing; sounds are too loud; ringing or hissing in my ears; Move one ...
Worker hanging strapped into a safety harness during a fall rescue drill. Suspension trauma, also known as orthostatic shock while suspended, harness hang syndrome (HHS), suspension syndrome, or orthostatic intolerance, is an effect which occurs when the human body is held upright without any movement for a period of time.