Ok so to clarify this.
the diagnosis I was given subsequent to this was CRPS (complex regional pain syndrome).
essentially I was in an accident and my foot was smashed up and operated on and then in a cast for six months.
this caused major physical damage to my foot (obviously) including broken bones, severed ligaments and muscles and nerve damage.
now what is interesting here is the level at which “belief” operates.
as my foot basically was sending pretty much no sensation to my brain my brain at a level underneath the conscious level essentially re-organised the perception centres of my brain.
i (consciously) believed I had a foot because I could see it. But when the plaster came off I had no motor control (couldn’t move it) and no sensation (couldn’t feel anything).
it took a couple of years of physio and slow work on motor imagery to recover some motor control and some sensation,
now in our current way of splitting things normally we don’t say things like strokes are mental illnesses even though they affect the brain and the mind.
a stroke literally cuts of blood supply and kills part of the brain, but people after stroke can by physio and speech therapy etc relearn the skills that they lost when that part of the brain was damaged.
in the same way I’m not diagnosed with a mental illness because I lost motor and sensation in my foot - this is considered a neurological thing ie to do with the functioning of the nerves and brain.
equally, if someone loses a limb in an accident, their brain has developed motor control and sensation experiences for the limb and often people experience sensation in alimb that is not there anymore. This is known as phantom limb pain. Again, this is not considered a mental illness largely because it’s the brain not being able to adapt very well to a new bodily reality - it’s considered neurological.
you can get psychological therapy for stuff like CRPS and phantom limb syndrome but it focuses on changing the inputs into the brain so that the brain is able to re-organise itself - so my CRPS therapy was imagining moving my foot.
not the sort of talking about childhood/CBT stuff which is generally advised to mental health.