Changed medication of Gabapentin to a different dosage on Thursday.  Friday I broke out in hives.  Still have them as of Tuesday.  Going to allergist tomorrow, hopefully she'll be ableto help.  Heat was a major factor at recent concert.  Even with sunblock, I got a burn on my forehead and neck.  Quite shaky.. probably cause I hadnt eaten for a while as well.  Shake is in my hands... I haven't experienced it in my head at all.