Hi T.,
I'm sorry you're having back pain. I have 3(that I know of) herniated discs in my back, that were discovered on MRI after I bent down one day to pick up my 5 month old baby, and couldn't get back up. I'd been to doctors *just* for back pain twice before, and mentioned it in several non-related visits, and it took that one doctor to get me the MRI that found the problem.
Two of the discs touch the nerves and cause pain, as well as numbness, tingling, coldness, and a few other things, and from time to time, I can still have problems with my back locking up. The last time it happened, I went to a chiro, and she was awesome in helping me get past it. BUT, she wouldn't have been able to do the exact thing she did if I hadn't have been able to tell her what was wrong with me, as I had the diagnosis back in 1999 at an Army hospital.
I'm not a doctor, but the problem I anticipate w/self-diagnosis, is that one could look up symptoms for 50 different ailments, ranging from minor to fatal, and would probably think they had all 50 of them.
I know there are some not so good doctors out there, but there *are* good ones, and a good one *will* do whatever's necessary to get to the cause of your problem and help you. But I know they see it all the time, people coming in thinking they know exactly what's wrong with them because they looked it up online. Maybe these folks get it right sometimes, just by chance, but I bet that they get it wrong more. It has to be frustrating for docs knowing that people will close their minds and think that they(docs) are disregarding them because they wouldn't listen to what they thought was wrong with themselves, but, doctors have an obligation to try whatever they can to help us, and I bet sometimes self-diagnoses get in the way of effective treatment because some docs just aren't given a chance.
So, I suggest like the others said, go in with an open mind that your doctor knows what he/she is doing, and will get to the bottom of your problem. You could mention the disease you found online and ask the doc what they think, but I wouldn't set my mind on it if I were you. Self-diagnosis is a bit fool-hardy at least, because you don't have the expertise or diagnostic tools the doctors have to be able to accurately diagnose yourself, plus as I said, you might just be barking up the wrong tree. But, the doc might just go ahead and check it out, or be able to set your mind at ease about it by sharing more info about it that you can't find online.
Then, follow the course of treatment your doctor prescribes for you, and go online to check out *that* diagnosis, to make sure you're doing everything *you* can to aid in your own relief and recovery.
If the doctor you see on the 6th ridicules you or disregards any of your concerns or symptoms, then definately see someone else.
Best of luck to you, and I hope you feel better soon.
K. W