Physical or psychological?
I didn't want to hijack the low blood sugar thread. I have a mild form of hypoglycemia too. However, NO ONE believes that I have it!
Even my own parents. I belong to another forum where people say that their friends/family do not believe they have psychological problems like bipolar, adhd, or anxiety. A few days ago, someone told me that some of her family does not believe that she has Crohn's Disease. Eventhough she has had operations!
So, I guess this is somewhat common.