I agree...it's not something that is "seen" by others. It is something that was affecting my life for quite a while before I knew what the reason was. It's not easily understood by me, much less others who I've tried to explain it to.
I remember when still working how hard it was to come up with descriptive words that I was looking for. It was so frustrating. I have one good friend who would help me say the word I was looking for. Bless her heart. She was a good friend. We neither one knew the reason for it. She is the one friend I think who is closest to understanding it all.
Bless your heart Kitty...

... This rotten label we've been given!