Fifteen years ago I started to develop mild neurological symptoms. Mostly headaches, some minor muscle twitches, and some weird vision issues. I started working with first my GP and then with a neurologist to try to get to the bottom of it. The investigation was leading towards some form of optic neuropathy. In parallel I moved to a new job. All of my symptoms went away and in retrospect at the time all of the symptoms had started when I'd started that job. The fluorescent lighting near my desk there was terrible and as far as my doctors and I could figure out that was likely the cause of it.