Veteran here--- Although I had a Facial Nerve Tumor which is a bit different from the AN I feel qualified to answer as I had my Tumor removed in 1992 and have permanent facial issues. As most will tell you we're not doctors but I believe facial twitching is a good sign. I first noticed movement 6 months after my surgery, twinges, tugs, etc., they continued off and on for at least a couple of years. Don't recall exactly as it's been a very long time. I'm deaf in my left ear but a few times a year hear a ringing or buzzing noise. Just last year my lower eye lid & cheek twitched off & on for almost a week, I was hoping it meant my eye would finally start watering again. It didn't, but on the other hand it didn't turn out to be a bad sign either and I'm thankful for that. As they say, "Stuff Happens" and we don't always know why! Don't worry about the twitches, enjoy them! Jill