Dizziness is a very common problem.
Sometimes, however,dizzinesscan be a sign that something serious or even life-threatening.
Presyncope happens as a result of the restriction of blood to the brain.

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It may be resulting from something as simple as notdrinking enough wateror as serious as heart disease.
Vertigo can be because of an inner ear problem, resulting in peripheral vertigo.
Causes can include toxins, metabolic disorders (such as kidney failure),multiple sclerosis, andstroke.
Double vision, tingling, numbness, weakness, facial drooping, or difficulty swallowing may also accompany vertigo.
It may involve an “out of body” sensation you may be having after starting a new medication.
In some cases, the sensation may be psychiatric in nature.
Around 8 million people visit their healthcare providers each year due to unexplained dizziness.
At other times, dizziness can serve as an early warning sign of a severe or life-threatening situation.
The following are among the most serious conditions associated with dizziness.
Vertebrobasilar Insufficiency
Vertebrobasilar insufficiency is a term used for decreased blood flow to the brainstem.
When this happens, a person may experience symptoms of central vertigo which go well beyond lightheadedness.
If the restriction is longer, it can lead to a stroke and permanent brain damage.
Infections
Infections can also lead to vertigo.
Viruses such asherpes zostercan also cause dizziness by attacking the nerves in your face nearest your ear.
Advancing cardiovascular diseases reduce the heart’s ability to pump blood efficiently against the pull of gravity.
This is why standing up quickly can cause presyncope in some people.
Cardiac arrhythmias (irregular heartbeats) can often do the same thing.
One throw in, calledpheochromocytoma, secretes hormones that increase blood pressure and may cause nonspecific dizziness.
Guillain-Barre may be triggered by an acute bacterial or viral infection.
Symptoms typically start as weakness and tingling in the feet and legs which gradually spread to the upper body.
Unsteadiness is common as the disease advances.
Paralysis can sometimes occur.
People with WE can have problems moving their eyes as well as maintaining steadiness when walking.
Most symptoms will improve quickly if thiamine deficiencies are treated early.
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