I just had a funny experience of how people react when they understand or don't understand your condition. I had a skin cancer (basal cell, surface only) removed from the crown of my head, and they wrapped gauze around and around my head and under my chin to keep the thick pad of dressing in place. I looked like a classic accident victim. I skulked out of the place with a hat with chin flaps pulled firmly into place, and went shopping. It was way too hot to be wearing a hat like that, and I got a lot of looks that told me "you are weird". So I thought, to heck with it and took the hat off. Then the looks were all of smiling sympathy.