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ORIGINAL ARTICLES |
From the Psychiatry Research Unit, Hospital for Sick Children (J.J.R.), and Department of Psychology, Toronto Hospital (D.S.), Toronto, Ontario, Canada.
Address reprint requests to: Dr. Julia Rucklidge, Psychiatry Research Unit, Elm Wing 4th Floor, 555 University Ave., Hospital for Sick Children, Toronto, Ontario, M5G-1X8. Email: julia.rucklidge{at}utoronto.ca
| ABSTRACT |
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METHODS: The patient was referred after 3 years of unsuccessful outcomes with standard topical and oral treatments prescribed by her family physician and three dermatologists. Treatment consisted of five sessions of self-hypnosis training in techniques of relaxation, deepening, and imagery, and home practice with an individualized instructional tape.
RESULTS: After treatment, the patient reported substantial tissue healing, confirmed by her treating physician, that coincided with significant reductions in her scores of itch intensity, itch-related sleep disruption, and distress from pre- to posttreatment. These improvements continued at 4 months of follow-up, and the patient reported complete resolution of physical symptoms.
CONCLUSIONS: The fact that these changes coincided with only minor improvements in general anxiety scores suggests that the resolution of the patients itch condition was treatment-specific rather than the result of methodological artifact, participant reporting bias, or a general sense of feeling better. These findings suggest that hypnosis is a cost-effective treatment for idiopathic itch conditions, especially those that are unresponsive to standard medical treatments.
Key Words: idiopathic itch hypnosis dermatology case study
Abbreviations: SCL-90-R = Symptom Checklist-90-Revised; STAI =State-Trait Anxiety Inventory; SHCS = Stanford Hypnotic ClinicalScale; IRS = itch rating scale; GSI = General Severity Index.
| INTRODUCTION |
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Hypnosis and self-hypnosis training have been shown to be useful techniques for eliciting relaxation, controlling pain, and altering uncomfortable, nonpain sensations (2, 3). More specifically, hypnosis has been used successfully to treat the subjective discomfort and distress associated with generalized itch and other stress-related skin disorders, leading to improvements in physical condition (410). This article presents the case of a woman presenting with idiopathic vaginal and anal itch.
| Case History |
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On assessment, Ms. D. was taking Dermorate and finding it limited in its usefulness. She reported that her condition was adversely affecting many areas of her life, including her ability to work, sexual relations, sleep, and psychological state. She reported that she was seeing a psychiatrist twice a week for treatment of bulimia nervosa; she was also a recovered alcoholic and reported a long history of depression, anxiety, and suicidal ideation. Although she was not able to identify a psychological trigger to the itch, she recalled that the onset of the itch coincided with the death of her husband.
| METHODS |
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After completion of the pretreatment interview and 7-day assessment, the patient was treated with five 1-hour sessions of hypnosis training spanning a 6-week period. Hypnosis training consisted of guided muscle relaxation, a deepening technique to enhance relaxation, visualization of a favorite scene, and, finally, the use of imagery and suggestions to control the itch. This training involved developing an image of the itch (including details of its color, shape, weight, and texture) and then introducing suggestions of how Ms. D. might alter the itch image. Suggestions included images of reducing the intensity of the itch color, replacing the itch color with a more soothing one, modifying the itch texture, soothing the itch sensation with wind or water, attaching a metaphoric thermostat to the itch, and gradually imagining controlling this thermostat to reduce itch intensity.
Sessions were taped, and the patient was asked to practice with the tape at home each day and to record itch intensity before and after each home practice on the same 11-point scale (ie, 0 (no itch) to 10 (worst itch)). The patient was also asked to rate her depth of hypnotic trance reached (again on an 11-point scale from 0 (very little trance) to 10 (very deep trance)).
Assessment Measures
Itch Rating Scale.
The IRS is a seven-item rating scale developed for this project to assess itch severity (right now and average over the day) and duration, itch-related distress (right now and average over the day), itch-related sleep disruption, and itch control. Each item is rated on a 0 (not at all) to 10 (most (worst) you have ever experienced) scale. Itch control was rated from 0 (no control) to 10 (complete control). This scale was modified from similar patient rating scales of chronic pain, instruments found to be valid and reliable measures of symptom intensity (14).
State-Trait Anxiety Inventory.
The STAI (12) is a 20-item self-report measure of general anxiety symptoms; higher total scores reflect greater anxiety.
Symptom Checklist-90-Revised.
The SCL-90-R is a 90-item standard measure of global distress over the previous 7 days (11, 15). Although some studies have failed to support the postulated symptom dimensions of this scale (1618), there is general agreement supporting the scales GSI as a measure of overall distress (11, 1518).
Stanford Hypnotic Clinical Scale for Adults.
The SCHS-adult (13) is a brief scale designed to measure hypnotic responsiveness, producing a rating of patient hypnotic susceptibility ranging from 0 (low) to 5 (high).
| RESULTS |
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We assessed the statistical significance of pre- and posttreatment change in IRS scores relative to the 7-day variability in her scores using paired sample t tests. A Bonferroni correction was applied to compensate for multiple comparisons so that only differences with a p value of less than .007 were considered a significant change.
As shown in Table 1 , Ms. D. showed dramatic improvements from pre- to posttreatment rating scores, improvements that continued at the 4-month follow-up examination. Changes were significant for pre- and posttreatment ratings of average daily itch (t(1,6) = 12.050, p < .001), average itch-related distress (t(1,6) = 6.874, p < .001), and itch-related sleep interference (t(1,5) = 12.649, p < .001). At 4-month follow-up, changes were significant for average daily itch (t(1,6) = 12.961, p < .001), average itch-related distress (t(1,6) = 11.342, p < .001), and itch-related sleep interference (t(1,5) = 12.649, p < .001). In addition, changes in immediate ratings of both itch (t(1,6) = 6.315, p = .001) and itch-related distress (t(1,6) = 5.431, p = .002) had become significant at the 4-month follow-up examination. Of note was that Ms. D.s sense of control actually decreased at 4-month follow-up even though she remained itch-free. She explained that although she felt she could control her itch once started, she did not feel she could stop the actual onset of itch from occurring.
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| DISCUSSION |
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Evidence suggesting that these improvements are a consequence of the hypnosis treatment comes from several considerations. One is the patients own report of her surprise at the immediate effects of the hypnosis on her itch, scratching frequency, and associated symptoms. A second is the patients reports, confirmed by her physician, of complete tissue healing in the affected area coincident with and subsequent to the treatment. A related consideration is the long-standing, chronic, and unresponsive nature of her condition before the beginning of hypnosis treatment, as evidenced by the repeated physician visits, referrals to specialists, and use of numerous topical medications without relief.
A fourth consideration is that the pattern of changes on the three main outcome measures, IRS (itch-related symptoms), the GSI of the SCL-90-R (overall symptom distress), and the STAI (state anxiety), is consistent with a treatment focus on itch relief only. Thus, although Ms. D.s ratings on the IRS showed significant reductions across the treatment, her scores on general measures of symptom distress and emotional state showed a different pattern. For example, although the GSI changes paralleled reductions in IRS ratings from before to after treatment, they then increased slightly at 4-month follow-up. Pre- and posttreatment reductions in IRS ratings were coincident with only a moderate change in self-reported anxiety scores (61st to 50th percentile) and no further reduction at follow-up. These two patterns of change are consistent with what would be expected from treatment with a specific focus on symptom relief; namely, it successfully eliminates a major portion but not all symptom distress. In other words, the treatment addressed only anxiety specific to the itch; it was not aimed at addressing anxiety related to her many other psychiatric problems.
One limitation of this study is that it was uncontrolled. Therefore, interpretability of the results is limited by the fact that it is not possible to verify whether the changes noted were specifically a result of treatment. Nevertheless, the consistency of the results with the symptom-specific nature of the treatment supports the interpretation that the reductions in IRS ratings are less likely to be explained as simply the product of a methodological artifact, participant reporting bias, or a general "feel better" effect.
Finally, hypnosis offers the combined benefits of being cost-effective (33% cheaper than the standard medical treatments used in this case) and a nonmedication treatment for this condition. This is important given the common side effects of the medications used to treat Ms. D.s itch, which include dry mouth, nausea, dizziness, insomnia, and allergic reaction. There are no known side effects of hypnosis.
The evidence from this study supports the potential utility of hypnosis as an alternative treatment to standard topical medications for managing symptoms of persistent itch. Further research is required to investigate whether the benefits documented in this case can be generalized to a larger group of individuals with persistent, idiopathic itch conditions.
| ACKNOWLEDGMENTS |
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Received for publication September 29, 1998.
Revision received January 15, 1999.
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