Rajasekaran, M., Edmonds, P.M., & Higginson, I.L. (2005). Systematic review of hypnotherapy for treating symptoms in terminally ill adult cancer patients. Palliative Medicine, 19, 418–426.doi: 10.1191/0269216305pm1030oa
The search yielded 27 studies from 1974–2003, only one of which was a randomized controlled trial (RCT). Authors analyzed only the RCT.
Results of one RCT documented effectiveness of hypnotherapy in treating symptoms in terminally ill adult cancer patients.
The lack of well-designed studies to be analyzed calls for further research, involving effectively designed studies, to establish the effectiveness of hypnotherapy.