What Could Cause Constant Dizziness And Imbalance Despite Controlled BP, Especially Worsening In Small Spaces Or Supermarkets?

have been suffering from imbalance or dizzy and swaying 24by 7 Took brain MRI and seem to be normal. Consulted few ENT doctors and have issues with ear but said that issue will not cause imbalance Having medicines for Bp and in control. No sugar complaint I feel more dizzy when i am in a small room or inside a super markets etc. Really not sure what to do. Feel like always walking or standing over a balloon.