First, let me welcome you to Neuro Talk. You can get lots of good information here. Also support for what your friend is going through. There are others that will respond to details of what you want to know. all questions write down for the appt. any fears, write down, also if you have discovered information on the internet that scare you, bring that up to your doctor. don't let the information overwhelm you before your doctor has chance to explain things better. Many people have good resolution with this condition. Have some hope that things will turn out OK. We will be here to support both you and your friend. This is a great site, whenever I have trouble medically, I run back here for that support, and the friendships that I made. ginnie