It took visits to seven specialists in two states to diagnose girl's endometriosis

It sounds like the kind of disease that is usually diagnosed through a process of exclusion because you can't just do a blood test for it. I have an autoimmune disease and it took years to figure out what was going on.

Yes, Reiki is nothing more than faith healing, and there's no evidence that waving hands around causes physiological changes by itself. I too have issues with people paying tons of money to not actually learn anything.

However, there is ample evidence that pain and general health can be improved by having someone spend time with you and care about you. Pain is experienced in the brain and is influenced by stress hormones, which can be altered through meditation, relaxation, a real and focused belief that things will get better, etc. "Placebo effect" doesn't mean that something isn't causing changes. It means that the changes are caused essentially through the mind calming down and believing that there's hope.

Talk therapy is largely a placebo effect, but it's widely used and paid for in the western medicine system. With many of my clients, I'm doing actual teaching around different ways to think about things, but with a lot of others, I'm just listening, validating, caring that they're going through something that really sucks. This has been shown to hugely improve stress and pain, but I'm not actually DOING anything.

...that shows off the worthlessness of the "contributions" of the typical anonymous Internet poster.