Hi Argentum, and welcome to the forum.
Have you read any of Dr. Sarno's books yet? He has clear explanations for many of the crazy things that we experience, which definitely includes symptoms that come and go, and flare up for what we think is no reason.
I highly recommend that you participate in our free Structured Education Program which is at tmswiki.org One day at a time, you will learn a little more about TMS, and do writing exercises designed to teach you to listen to the negative messages in your brain, how to change those messages, and also how to find the deeper emotions which your brain is trying to distract you from experiencing.
Those two things were certainly key to my recovery. But by the time someone reaches us here, I have to admit that we are the tough cases, and we will probably struggle with TMS the rest of our lives. Whenever I get overly stressed out, some of my symptoms return, and I know that I need to do some journaling, and/or some mindfulness practice, in order to get back on track.
The good news is that even when I do get symptoms, I assume that they are TMS, rather than freaking out and running to the doctor. It's been more than four years since I did that.
Read some of the stories in our Success Stories subforum for an idea of what it took for some of our members to overcome many extreme conditions, and hopefully you will be inspired to find your own solutions - there are many recommendations here and on the wiki!
Jan