I haven't studied PN but I have learned a lot about trigger points.
I used the hands on self therapy for my RSI TrPs.
The ones I couldn't get rid of myself , my chiro worked on and was able to resolve them.

Do you think you have actual trigger points? {info links below}

If you do are you sure they are related to the PN or could you possibly have a secondary condition that involves the muscles/fascia?

I would try acupuncture and/or manual TrP and then move to the injections if I felt a need.
Or
Low Level Laser? {aka cold laser}
IF stim - Inferential stimulation {like TENS only better for some things}

TrPs-
{a very sore small area- like a small bump or knot in the muscle}
They are located in the muscles but they can cause referred pain & symptoms in other places.


trigger points {Trigger points or trigger sites are described as hyper irritable spots in skeletal muscle that are associated with palpable nodules in taut bands of muscle ...}
http://www.google.com/#hl=en&q=trigg...2da727ef84a59f


trigger point injections
http://www.google.com/#hl=en&source=...2da727ef84a59f