Hi I have been feeling quite dizzy and disorientated for quite some time now and have had the relevant tests eg. bloods, urine, blood pressure, heart monitoring, MRI brain scan and also a Table tilt test. All these tests were fine and nothing showed up in any of them. But lately Im experiencing a different type of dizziness than before. It used to last just a few seconds and then it would pass but now it feels like Im a bit drunk and hard to keep by balance, even though Im not drinking alcohol. Ive tried serc, vertigon and stemetil medication. do you have any ideas what might be causing this. there is no family history of it.