Yes it is common with all "unseen illnesses and disabilities" I have Autism, Fibro, Depression, Anxiety, C-PTSD, and Borderline Personality Disorder. I once had someone say to me "You don't look Autistic" I didn't know if I wanted to bang my head against the wall or slap him. Fortunately for me, I decided against violence. I sent my parents two articles last week about the pain and exhaustion from Fibro. They are "boomers" (no disrespect ) who think you go to work sick, if you're in pain, you ignore it, if you have a migraine (which I get) you go to work and ignore the migraine, you don't take time off from work for a Doctor(they seem to forget a majority of jobs start before a Doctor's office opens and ends after it closes) and push thru any pain you have. Despite the fact that I told them that our original family doctor once told me, you never go to work sick. You won't get better because you're not resting, you're gonna get everyone else sick, and then once you start to feel better, you'll get sick again because you came to work sick. They never replied so I know once they saw what it was about, they deleted the emails. My two cents on what doctor to believe: I'd never trust a chiropractor over Mayo (but that's me) They are the best hospital in the world.