Tapping comes in handy when stuff no longer makes sense physically. Have you ever had a treatment from an excellent reputable therapist who would find a lot of stuff that made sense, but pain wise, you still felt like you were playing a game of whack a mole? There can be any numbers of reasons for that.
Tapping works with the limbic system of the brain. The limbic system is where we store old memories, traumas and how we perceive these memories and traumas. Ever see two people experience the same injury and notice one recovers fairly quickly and the other one is still in pain several months to years later? The way each individual perceives their experiences vary and the way those experiences are stored in the body also varies.
Anything in the limbic system of the brain trumps anything that can be changed in the physical body through physical manipulation. This means that if there is a blockage in the limbic system of the brain, none of those physical touch therapies will work until the blockage is cleared. Think about trying to move out of your house with boxes stored in front of your door, keeping you from being able to get out of your house.
Examples of removing the boxes from the doorway:
When I did some exercises out of Nick Ortner's, "Tapping Solution for Pain Relief" book, burning, excruciating pain that I had in my right shoulder blade pain for over a decade got felt 80% better. The memory that came up was that this was when I was at a job I hated and my husband was having a hard time holding down a job.
A client with bad TMJ from a car accident was seeing me for bodywork and I gave her a copy of "The Tapping solution for Pain Relief" book. When I asked her how she liked the book, she said in addition to helping with the haw pain. it also helped her anxiety and depression.
I worked with a woman with calf pain that doctors could not figure out. No matter what procedure she had done, it still hurt. We tapped on some stress related events that happened in her life when her calf started hurting and then I did some Voila Method of Structural Joint Balancing with her while she was still seated in the chair. Her calf never hurt again and I never got her on the massage table to do any manual therapy.
I recently worked with someone who get frequent migraines. No matter what physical manipulative therapies he had that is supposed to help migraines he received, he got worse and was getting them more often. That does not physically make sense at all. I asked him how long he had been getting them. He told me the year they started and he had 3 traumatic life changing events that happened that year. We did full session of tapping and it has helped his migraines significantly.
Tapping does not replace counseling or psychotherapy. It used used for stress relief only.