I have chronic back pain due to a disease which went undiagnosed for most of my life.

I understand that this comment is made in good faith and with the best of intents, but I loathe getting this kind of advice. I'm not trying to be a dick, I just want to let you know that this advice is extremely frustrating for a lot of people suffering from back pain. ESPECIALLY "you look young and healthy"...Yea thanks, I'll probably still look young when I'm in a wheelchair.

PS If your back hurts and your doctor doesn't seem to believe you or care, get a new doctor.