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Thank you for your question.
The most common cause of one odd episode of dizziness is a condition called as benign paroxysmal positional vertigo which is a condition where one experiences sudden episodes of dizziness.
It is usually self-limiting and is not anything serious.
However, as a general rule, any person who has new onset dizziness must be evaluated to rule out a heart condition or a brain problem such as a transient ischemic attack, which is the reason why I would recommend that you be seen to make sure this is nothing to worry about and to rule out anything serious.
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It is almost certainly BPPV (benign paoxysmal positional vertigo).
Medications such as meclizine or betahistine or prochlorperazine which are vestibular suppressants (suppress the inner ear, which is the cause of the dizziness) will help a lot with your symptoms.
A maneuver called as Epley's maneuver performed in the doctor's office may also help a lot with your symptoms.
I would recommend that you be seen to confirm the diagnosis and then proceed accordingly.
Most likely not.
But if the cause is not determined by examination and history then a MRI would be the better option.
On examination a maneuver called as the Hallpike maneuver is performed to diagnose vertigo especially BPPV that I mentioned above.
Here is a video of the examination that is done:
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I understand it is a scary feeling.
I do not think that it is anything serious.
I do not think that there are other causes as far as I am concerned.
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If you had cancer you would have already been in the heavens.
Dizzy spells like what you mentioned are usually not anything serious and related to an inner ear problem (benign positional vertigo).
I would recommend using something like antivert or meclizine or dimenhydrinate which is over-the-counter to help with the dizziness.
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Trust me, this is not cancer.
It is your anxiety that is getting the better of you.
Let me know if you have more questions.
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