What could it be?

[macaulay]

Randomly during the day I begin feeling dizzy and it usually goes away when I sit down but one time I was unable to so I remained standing. Not sitting caused the dizziness to continue for a few minutes before I began getting blurred vision and I was almost unable to remain standing, before too long I threw up and my ears began burning. I was just wondering if anyone had any ideas what this could be?

[Zazu]

Might be an infection in the part of your ear which affects balance (the ear cannal). This coupled with a poor / bad diet or not eating enough could cause the nausea and vision problems.

[foof1]

You might be dehydrated so try drinking some water and if that doesn't work, you should try and see a doctor.

[Obscene Eyedeas]

It cld be low blood pressure

[sebbie]

You have just listed a host of symptoms that are rather general and could have a multitude of causes.

My own personal recommendation to you is to see a doctor, they will run some tests/check you out and solve things for you.