woke up dizzy after sleeping on my left side, rolled to my right until I felt my equilibrium somewhat normalize.  I had an AVM of the dura a couple of years agobefore, but it was repaired before it burst or bled. I also had a concussion a few days ago.
Hi, Thanks for writing in. A concussion is very mild brain injury and does not usually need treatment. Dizziness occurring only once needs further observation. If there is persisting dizziness then you may need to consult a neurologist and get a CT scan done to look for any problems in the brain.