I've tried just about everything and not found relief, well not much. Gabapentin was/is a nightmare, but I was on the highest dose prescribed, 3400mgs! I've since gone down to 600mgs and felt NO difference in pain levels. I too have both conditions plus something called spondylolisthesis in my back.
Very painful. I was so allergic to Lyrica that I got "cankles" or my ankles swelled up so badly that they looked like my calves! Funny, really.
I do take oxycodone a few times a day and it does take the edge off a bit, plus I've a myriad of muscle relaxers that I can switch around, that way I don't get dependent upon a single one. I've been going to a PM doctor, but she really isn't helping me. She does trigger point acupuncture and laser-acupuncture or something she calls "reeducation" of my muscles, which I don't quite understand but I'll try almost anything at this point.
Oh yes, gabapentin has me craving sugar so badly that I've gained weight. Ugh.
I suppose you must keep trying to find what works for you. I did try an acupuncturist who came highly recommended and she was fantastic, I had almost 24 hours of relief from my first session with her, it really was incredible but the sessions began not working. I walked in there a total skeptic and walked out believing that acupuncture has it's merits. But, like I said it did sort of wear off, for lack of a better term. Try everything you are offered by your doc, unless you know you will have a problem with it. We all have to fight our hardest to mitigate the pain a bit.
I just bought a book by Devin Starlanyl on amazon, Fibromyalgia and Chronic Myofascial Pain, A Survivors Manual, it's actually a good book, I really recommend it. There is a newish question By Sara, don't know if you know Sara, but she has recommended books by Dr. Clauw. He is supposed to be quite an expert! (But his books seem to be a bit expensive to me.)
I hope you find some relief, it's difficult to lead ones life in chronic pain, isn't it? Just keep fighting!
Best to you,
P.S. I tried Cymbalta and had an allergic reaction to that as well. Also tried Topamax which was really bad! I felt stoned and I also felt like I was freezing and couldn't tap into my own vocabulary on that stuff, I was "word hunting" for a month on Torpormax! Gabapentin has a similar effect on me, my memory is pretty bad and I hunt for words on it as well as Topamax.
(I get a kick out of calling it "Torpormax"!)