About a month ago I started having strange symptoms out of nowhere. One day I felt kind of dizzy but not bad so I didn't worry about it. The next day it was worse, and by the third day it was constant all day and has been ever since. I now have narrowed the feeling down to more of a light headed feeling, like I am not getting enough blood to my head or something. I constantly feel floaty or out of sorts and just not myself. When I am still like sitting on the couch I feel the sensation in rhythm with my heartbeat. Its worse when I strain, like cough, blow my nose or turn my head. When I turn my head its as if it takes a second for everything to catch up. I have been to my regular doctor who said inner ear - went on prednisone and that was terrible. ENT said it was allergies, I am on allergy meds and no difference. Cardiologist said my heart is just fine. MRI and MRA came back all good too other than I have an arachnoid cyst but he said its not causing my problems and I was probably born with it. So now my "diagnosis" is tight neck muscles. So I am seeing a physical therapist and acupuncturist but so far no big change. I just want to feel normal again I am going out of my mind. Anyone have any insights??