I have a friend I am doing research for: She has a severe burning sensation in back, chest, arms and legs, but when she has these attacks, she also has cold sensation in hands and feet. She also has severe fatigue to the point that she can be sitting at her computer and fall asleep or even on the toilet and doesn't realize she is "out" until she wakes up or someone wakes her up. She feels as if her memory is also being affected and seems to have lapses in short term memory (where she laid down her glasses 10 minutes ago, etc.) Could you lead us in the right direction on care and what this could possibly be. Thank you.