Dizziness,vision blurriness, & confusion that lasts hours or days on/off x 3 yrs.prednisone clears up sx. md wants eeg.worth it?tired of useless tests

Yes: These symptoms sound like central (brain) disorder. The EEG may give important information. The fact that prednisone helped may indicate an inflammatory disorder. See a neurologist. The fact that the symptoms have been present for 3 years strongly indicates that you should have an MRI of the brain. All these symptoms for such a long time really needs a neurological diagnosis ASAP.

Dizziness: It's reasonable but you should see a neurologist and get an MRI as well