Exceptions to wearing a mask

Hello Dr. Hinshaw. I am an Albertan who has issue wearing a mask for more than a few seconds at a time. Wearing a mask (both cloth or surgical masks) cause my vertigo condition to start and gets much worse over the time I wear the mask.
I have been refused entry into grocery stores due to not being able to wear a mask. When I suggested I could wear a face shield these same stores said that wasn’t good enough. I am being forced to shop only at specific stores that are okay with me wearing only a face shield.
I think it is important for people who share my frustration to be heard and acknowledged. There are many shortcomings with the way Alberta Health has dealt with the issue of how enforcing the wearing of masks should be done.
Sincerely Randall Adams