I've been having very similar symptoms for months now and no diagnosis yet
In fact I have the neck/back of the head pressure right now. I actually get this creepy crawly sensation as well. I even ended up in the ER due to a panic attack caused by all of this and I have NEVER had one before.
I'm not on Xanax or any type of meds. Have never needed anything like that for anything
I've had Head and Neck MRI's, two different types of Nerve Conduction studies and multiple blood tests. Nothing...