I get body tremors especially in my hands. My hands have been shaky since I was like 10 (I'm 23 now). They especially shake when I'm around people but even when I'm not they still do. I do have an anxiety disorder but medicines like Klonopin and Xanax don't help the tremors. Is there like a test (i.e. MRI, PET) that could show what's wrong? I've had a MRI brain scan once last year but nothing was abnormal according to the doctor. What can I do?

Thanks.