From a Western point of view, the decisive moment in the history of hypnosis occurred in the 18th Century (coinciding with the Enlightenment and the Age of Reason).
The work of Franz Mesmer, amongst others, can be seen as both the last flourish of “occult” hypnosis and the first flourish of the “scientific” viewpoint.
Thanks to their persistence and efforts, by the end of the century hypnosis was accepted as a valid clinical technique, studied and applied in the great universities and hospitals of the day.
This trend continued into the 20th Century, although in some ways, hypnosis became imprisoned by its own respectability, as it became mired in endless academic debate about “state” or “non-state”.
The history of hypnosis, then, is really the history of this change in perception.
In the 21st century, there are still those who see hypnosis as some form of occult power.
On the one hand, a history of hypnosis is a bit like a history of breathing.