I would like to understand more about the question of pain that can accompany needling. Generally speaking, I don't have much pain or discomfort. When I do, it is sharp but fades rapidly. However with my last treatment, I had considerable pain & discomfort all along my left side, which changed some during the treatment, but did not go away. The right side was fine. I've not had this experience before, and was hoping someone could shed some light on the question of what causes pain with needling in general, and more specifically, what a pattern of pain on one side might indicate.
Thank you for your consideration.