Thank you so much for your question, LadyJane. I have been contemplating writing on this very topic. I've read so much about it, and yet I know there is still much to be learned and shared about chronic pain in general. That you have a friend with myofascial pain syndrome, most likely gives you a better understanding of it than the majority.
My pain is head to toe, 24/7, and is very similar to flu-like aches. At times, the intensity can be debilitating. There is no one thing that I do for pain relief, as there are many things that can help a little. I have not yet heard of anything that relieves the pain 100%- in fact, my rheumatologist recently told me that my goal should be 10-20% pain relief, which is better than zero.
I will write a new hub on this shortly. But to actually answer your question briefly, here is what I do for pain:
1. Liquid vitamin D
2. Ibuprofen in high quantities
3. Tramadol and Trazadone at night to keep the pain at bay long enough to sleep.
4. Chiropractic care- adjustments and E-stim
5. Exercise such as dance or at least a short walk or swim.
6. Meditation and relaxation techniques.
7. Hot baths and massage.
There are some other ideas that I plan to try, ideas which I think have a lot of merit. But I will save my hub to explain those in detail.