For the last three months I have had on off colds with awful sinus problems. Now about 20 minutes ago I stood in my kitchen and at the turn off my head I had the strangest sensation of fuzz all around my head. I had to hold my head in my hands as I couldn't focus and went straight off balance. Once it had gone I still felt a little uneasy on my feet. Now I have a pounding headache and have a blocked nose. As I've never felt the fuzzy feeling before I felt a little 'panicked' . Can anyone shed any light on what it could be?