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Subjectively perceived personality and mood changes associated with subthalamic stimulation in patients with Parkinson's disease

  • C. J. Lewis (a1), F. Maier (a1), N. Horstkötter (a2), A. Zywczok (a1), K. Witt (a2), C. Eggers (a1), T. D. Meyer (a3), T. A. Dembek (a1), M. Maarouf (a4), E. Moro (a5), M. Zurowski (a6), C. Woopen (a2), J. Kuhn (a7) and L. Timmermann (a1)...

Abstract

Background

Clinical and ethical implications of personality and mood changes in Parkinson's disease (PD) patients treated with subthalamic deep brain stimulation (STN-DBS) are under debate. Although subjectively perceived personality changes are often mentioned by patients and caregivers, few empirical studies concerning these changes exist. Therefore, we analysed subjectively perceived personality and mood changes in STN-DBS PD patients.

Method

In this prospective study of the ELSA-DBS group, 27 PD patients were assessed preoperatively and 1 year after STN-DBS surgery. Two categories, personality and mood changes, were analysed with semi-structured interviews. Patients were grouped into personality change yes/no, as well as positive/negative mood change groups. Caregivers were additionally interviewed about patients’ personality changes. Characteristics of each group were assessed with standard neurological and psychiatric measurements. Predictors for changes were analysed.

Results

Personality changes were perceived by six of 27 (22%) patients and by 10 of 23 caregivers (44%). The preoperative hypomania trait was a significant predictor for personality change perceived by patients. Of 21 patients, 12 (57%) perceived mood as positively changed. Higher apathy and anxiety ratings were found in the negative change group.

Conclusions

Our results show that a high proportion of PD patients and caregivers perceived personality changes under STN-DBS, emphasizing the relevance of this topic. Mood changed in positive and negative directions. Standard measurement scales failed to adequately reflect personality or mood changes subjectively perceived by patients. A more individualized preoperative screening and preparation for patients and caregivers, as well as postoperative support, could therefore be useful.

Copyright

Corresponding author

* Address for correspondence: C. J. Lewis, Department of Neurology, University Hospital Cologne, Kerpener Str. 62, D-50937 Cologne, Germany. (Email: catharine.lewis@uk-koeln.de) [C.J.L.] (Email: lars.timmermann@uk-koeln.de) [L.T.]

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Subjectively perceived personality and mood changes associated with subthalamic stimulation in patients with Parkinson's disease

  • C. J. Lewis (a1), F. Maier (a1), N. Horstkötter (a2), A. Zywczok (a1), K. Witt (a2), C. Eggers (a1), T. D. Meyer (a3), T. A. Dembek (a1), M. Maarouf (a4), E. Moro (a5), M. Zurowski (a6), C. Woopen (a2), J. Kuhn (a7) and L. Timmermann (a1)...

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