i was trying to concentrate on writing a report when all of the sudden i got this really uncomfortable burning sensation in my head and neck, it felt like my thoughts were constipated, piled high with no where to go, and most notably, like my brain was on fire. afterwards i started to feel really down. the firey sensation subsided, but flared up again, and now it's sitting at the nape of my neck. i'm a little worried, and wasn't quite sure where to post this under. has this ever happened to anyone else?