[nonameiguess]

That is at bare minimum not always the case. I had a couple of degenerative discs in my 30s and that caused chronic pain but it was definitely not the case that nothing was wrong with my back. It just wasn't something fixable, until physicians finally realized it would never heal and just removed the discs and gave me a couple interbody fusions. I'm fully recovered a decade later, but as shitty as the pain was, if there was an off switch, I'd have possibly paralyzed myself putting the spinal cord into a compromised position.