Help, I have this constant dull headache and feeling of tension..muscles stiff as a board in my forehead. Thing is, when i hold my nose and blow air into my ears and hold it, the pressure headache and muscle stiffness goes away completely; but comes right back when i let go of my nose.. I also seem to have a constantly blocked but very dry nose. I had a CT scan with contrast dye, of my head...totally normal and no sinus blockage.. Can you help please?