Glad you are ok!
Very interesting/strage about the vertigo cause.
In a similar vein, have you ever heard of mirror therapy? It's wear you use a mirror down the center of your face or body in sessions for a few weeks. They use it with people with nerve damage (phantom itching, burning, phantom limb sensation. It's really fascinating, and has some pretty dramatic results.
For example, someone might have lost an arm, but feels that arm is in a really awkward position (perhaps the nerves were sending out a signal about the position when they were severed). They use the mirror to give the illusion of having the arm back, and they imagine moving both arms.
Wonder if it might be of help with your forehead pain..
(sorry for the unsolicited health advice)
Anywaya, good luck