Well, my neurologist, from the local medical university, claims that he's seen acupuncture work well for people with PN, but it usually has to be done at least weekly. I tried a half a dozen sessions, however, and didn't notice much effect.
On the other hand, I've been seeing the same massage therapist for four years and when I was in a two-week bad spell, he tried a technique called cranio-sacral therapy. It totally reversed my bad spell. I'm not sure yet if it'll continue to work -- I've had so many random results and false starts, I'm not sure which way is up -- but massage in general seems to help. At least I forget about things for a while.