When I was diagnosed with a neurological condition that was having mostly physical symptoms, the first-line defense was antidepressants. So-named because they were developed to relieve depression, but really what they do is inhibit absorption of serotonin and/or norepinephrine leaving more free in the body to act on myriad different bodily functions. In my case, it actually caused serious digestion issues. It really clicked for me how everything in your brain is a physical process. Not just motor function, but cognition and emotions are all physical functions of how a very complicated mess of molecules bounce off each other. Autism, Alzheimers, ALS are all just misfiring molecules inside your skull. And it is therefore a given that it is physically possible to realign them back into order somehow. We just need to find the right tool to do it.
Yes! This! We are our bodies, and our bodies are biochemical. I'm encouraged by growing awareness and acceptance of things like psilocybin-based treatment for PTSD. Psychobiology is fundamental to... everything a human can experience or be.
Of course there will be lots of molecules involved, but that doesn't make it any easier to understand let alone do something about it. In medicine and especially in psychology our functioning is a huge black box with only indirect knowledge about interactions with certain things at a very high level.
It looks like naming thing is not just a problem for programmers.