I had it very strongly for the first 4 or 5 months post treatment. It has subsided now to the point where most days I do not notice it. Partially, it is masked by the nerves reconnecting from my neck dissections and the "interesting" sensations caused by that and the neck fibrosis. ;-)

I love to play golf, so every now and then when I look down at the ball or bend to put the tee in the ground, the zapping will start, which is a bit disconcerting. Like anything else, it becomes part of the "new normal" and we learn to adjust.