Treatment of chronic nightmares in adjudicated adolescent girls in a residential facility.

Abstract Purpose: To evaluate imagery rehearsal therapy for the treatment of chronic nightmares in a sample of adolescent girls. Methods: Adolescent girls ranging in age from 13 to 18 years were recruited from the Wyoming Girls School in Sheridan, Wyoming (treatment group, n=9; control group, n=10). These girls had previously suffered a high prevalence of unwanted sexual experiences in childhood and adolescence, and thus many suffered from nightmares, sleep complaints, and posttraumatic stress symptoms. Imagery rehearsal therapy was provided in a 1-day (6-h) workshop. Imagery rehearsal consists of three steps, all of which are performed in the waking state: (a) select a nightmare, (b) "change the nightmare any way you wish," and (c) rehearse the images of the new version ("new dream") 5 to 20 min each day. Control participants received no intervention. Results: At baseline, these girls had been suffering from nightmares, on average, for 4.5 years, and they reported experiencing 20 nightmares per month, which occurred at a frequency of at least one bad dream every other night. At 3 months, self-reported, retrospectively assessed nightmare frequency measured in nights per month decreased 57% ( p = .01, d = 1.4) and measured in nightmares per month decreased 71% ( p = .01, d = 1.7) in the treatment group, compared with no significant changes in the control group. No significant changes were noted for sleep and posttraumatic stress disorder measures in either group. Conclusion: Imagery rehearsal therapy was an effective treatment option for chronic nightmares in this adjudicated adolescent population.