Sylvain, I’ve read the piece on the Doctissimo Forum, and it’s clear that the sleep therapy that is described there is not at all like that used by Bailey, Sargant, and others. The latter were putting people to sleep in order to perform unconsented procedures on their brains. In the French procedure, the sleep is the treatment. Sleep is apparently conceptualized as a refuge and is entered willingly by the client. I have some reservations concerning the procedure, e.g. “the patient taken in hand by the psychotherapist must have the impression of sleeping under his protection” gives an impression of grandiosity. The “paroxysms of anxiety” could be Xanax withdrawal, which can be extremely difficult even after only 15 days.