[reneherse]

Wow, that's a truly unfortunate problem your friend is faced with, especially since we're likely still in the dawn of the general proliferation of LEDs.

I too notice the odd strobing effect of LEDs when they're in motion or I am: Christmas tree lights, Macbook Pro sleep indicator, some brake and headlights. I imagine having that be a cause of pain must be fairly similar to hyper-sensitivity to scented products/VOCs; one has to go out of of one's way to avoid commonly occuring things in the typical environment.

I've noticed the "Ford Fusion effect" whenever I've looked for it.[1] Got to do something to pass time in traffic!

[1] This link is for the sport version, but it has the same (hideous) sheetmetal as the base model. http://i.autoblog.com/2009/02/16/in-the-autoblog-garage-2010...