Re: brain tumor/MS fears controlling my life
IN BRIEF: This is not a brain tumour. Period.
Brain tumours can, and do, cause dizziness/vertigo. However, not really in the sense you describe.
It would start off with vertigo, but nausea and vomiting wouldn't be long coming behind it. You've had these symptoms for 1 month+. By now, if this was caused a brain tumour, your symptoms would have deteriorated severely. You WOULD NOT be on here posting. You'd likely be unconscious in a hospital bed.
By reading your post, it seems your doctor has very much so established a 'cause and effect' for your symptoms.
But, to reassure you, I would happily bet my career/bank balance on it that you do NOT have a brain tumour.
Good luck
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Healthcare Professional with Health Anxiety
Be kind, for everyone you meet is fighting a hard battle