Swartz C
Can J Psychiatry. 1981 Dec;26(8):555-7. doi: 10.1177/070674378102600807.
When no other psychotherapy or pharmacotherapy could prevent debilitation or institutionalization consequent to longstanding frequent repeated maladaptive behaviour, hypnosis has been observed to be effective in suitable patients. A documentation, three cases of such chronic severe behaviour which have been encountered by the author are described; each had been regarded as hopelessly unmanageable by the primary physician at the time of referral for hypnotherapy. Relevant to their suitability for hypnosis, all three patients were able to understand normal speech with difficulty, were able to concentrate well, and were agreeable to using hypnosis.