I don't think you really read my post very carefully. I would never downplay the suffering we endure. All I was trying to say is that on top of the numerous things that occur that aren't supposed to, sweeping trails of my arms, movement of stationary objects etc, the anxiety that many (not all) experience causes us to be concerned about things that are in fact normal. I can't speak for anyone else with HPPD but prior to it I didn't pay a bit of attention to any visual anomalies I may have had, consequently I'm always paranoid that normal things are symptoms, causing more anxiety. I made this post really just to see if we could identify things that are normal physiological responses and perhaps ease our minds a bit.