Do you consider your doctor to be the be-all and end-all of all your medical questions? "I need to ask my doctor about that...." Or "let me see what my doctor thinks..." Then you accept their words as guidelines for your life - food, exercise, modifications, etc.
Me, I have so many ailments, I take what my doctors say for the most part with a grain of salt (which is sometimes accompanied by a large margarita). The problem is I have so many ailments that sometimes they can't tell. Why do I have a rash/headache/pain? No idea. Maybe its just a side effect of one of your medications... Or from your blah-blah-blah, we don't really know.
If you are like me and have multiple ailments which cause pain and fatigue, it can be impossible to figure out what causes pain and fatigue. I mean I know the bone deep pain in my arm or leg is from fibromyalgia. And that the pain in my lower back is from degenerating disks. And that the pain in my right SI joint means I need to go back to get those pesky nerves killed off again.
But then I get many other pains that meander through my body of unknown origin. My doctors shrug their shoulders and say keep track of it and monitor frequency, etc. Then when one pain is resolved often I find other pains hidden behind them.
Then when I develop new symptoms, we need to figure out the cause. I can get a preliminary diagnosis of something new and then if I learn about it, I find that some of my other symptoms could be directly related. But unless I test positive for the new ailment, it maybe a pile of hooey and I give up on that. My favorite is 'you don't test positive for it but you probably have a similar unknown ailment'. And the best part is then 'there's nothing we can do about it'.
So I take what I learn at one doctor appointment, do a pile of research, and then I go back to my doctors and ask more questions...
The eternal life of the patient and questions with all my ailments.