Hi Joyce
I came here to look up the same thing - I am 5.5 months post-GK and I started experiencing facial twitching around mid-late March (which was only 1.5 months post treatment). It did seem to subside, but recently started again. When it does happen, I point it out to my husband and it is visible to him. I usually experience it around my lip (upper lip and corner of mouth), the side of my nose, my eyebrow, and sometimes below my eye and occasionally elsewhere.
I did see my neurosurgeon and they did a brief test (although my face was not twitching at the time) and said nothing seemed unexpected. They seemed to indicate that if it were a spasm and the face became frozen in that position, that would be of greater concern. However, I wanted everything documented and would encourage you to speak to your doctor if you have any concerns or if the symptoms are uncomfortable. They may be able to prescribe steroids to ease the symptoms if it is related to tumor swelling.
I also started to experience numbness along that side of my face. First it started at the very side, just in front of my ear, however, it later expanded and now I feel as though sometimes my entire cheek and chin are numb. And I have started having headaches again as well. Hopefully all of this is part of the normal course of action as the tumor reacts and eventually dies.
Good luck and keep us posted on your progress!
N