Hi i have had a really bad time lately to do with my head. It started off with really severe headaches all over my head which lasted for roughly four months. I went to my G.P who done some blood tests, these came back clear and the headaches subsided however now i have been feeling extremy dizzy and faint everysingle day for the past 3/4 weeks, i also have weak hands arms and legs and found it hard to walk. I have breathing difficulty and a lot of mucus. I can't sleep due to feeling so dizzy and weak, i am also shaky and dizzy. Do you have any idea what it could be? Any help would be much appreciated, thanks!