I know your Fluorescent light post is several years old - I just happened into it today. Did you ever get this resolved?
If not, do you consume aspartame? I ask because I had a similar problem about 12 yrs ago, several doctors including neurologist could not find cause. An acquaintance heard me mention this problem and said they experienced a similar problem. When they stopped using aspartame, it went away. I was skeptical, but tried it anyway. Within a week the symptoms disappeared and I have been symptom free since. Not sure if it was the cause, but without consuming aspartame the problem is gone.