I was 31 when this all started. Brown hair and eyes. I do have German and Indian in my. Not that I think it matters. What I really think is the cause is that our 30's are a stressful time. Most of us begin to realize that our "younger years" are behind us, and we have wives/husbands, kids, jobs, big responsbilities. Because we care so much for our family when sometihng goes wrong we are internet savy so we consult google, then the downward spiral starts. Then you get stuck there for months. Over the period of those months you "reset" your body to thinking this is the norm. Then when you want to break that pattern it is very difficult. You almost need to have something jolt your system to get out of this, just like how you got into it. I do believe for most bfs was avoidable if we had learned not to add stress to our first twitching event. I do however believe there is a genetic component. Both of my parent have told me they twitch (my dad more than my mom). So I think we are predisposed to it, but we "unlock the key" that opens the door to this path. I do think that whites are more prone to this also. Again I am sure it's genetic.