@LetsBeSensible I'm sorry I upset you with this comment. I do feel I need to explain it better. I know well that functional neurological disorders are very real and can be very distressing.
But if you read the link that you included, it acknowledges that the causes can be many, varied, unknown, but can include
"the brain trying to get rid of a painful sensation; the brain shutting down a part or all of the body in response to a situation it thinks is threatening; In some people, stressful events in the past or present can be relevant to FND. In others, stress is not relevant."
And the subconscious brain is going to be involved in all these possibilities.
It's not "psychologising symptoms" to acknowledge that the mind and body are intertwined, and that when either mind or body is uneasy or unwell, it can have a knock-on effect on the other.
I'm not going to labour this point as it's not really relevant to the subject of this series of threads, but acknowledging this interplay between mind/body is an important part of dealing with dis-ease and disease.