VK's post about a nasty migraine reminded me of the film Pi.
"In Manhattan, behind six locks, lives Max Cohen, a mathematician and computer whiz. Since staring at the sun at age six, he's had terrible headaches; plus, he can't abide human contact except with an aging professor, and he's obsessed with finding numeric patterns. His current obsession is the stock market; his theories bring him to the attention of Wall Street traders. He also keeps running into Lenny, a fast-talking Hasidic who fronts for a cabal that wants to rediscover long-lost mathematical mysteries in the Torah. Neither group is benign, and they pursue Max as his hallucinations and headaches worsen. Does nature offer any solutions? Can Max find them?" - from the IMDB
It's a disturbing but brilliant film which I've enjoyed immensely in the past, probably because I don't suffer from migraines.
VK, hope you feel better soon.