My 16 year old daughter recently showed me that her right arm (primarily hand) and sometimes her right leg has a tremor. She said it has been going on for a while maybe as long as 2months!! I have no idea why she didn't mention it before but she said she just figured it was nothing. I basically panicked (while trying to look casual). I made an immediate doctor's appt and read up on tremors on the internet. The doctor basically confirmed everything I know...often these tremors are benign but we need to rule out MS, brain tumor, and thyroid issues. I am concerned (and the Dr agreed) that it is a bit unusual that this is only on her right side since benign essential tremors sre generally bilateral. We did blood work today and have an appt for an MRI next week. I am falling apart worrying about the fact that this could be a brain tumor. My question is does anyone have any experience with benign essential tumor particularly on only one side of the body?