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Suicidal thoughts in patients with Parkinson’s disease treated by deep brain stimulation of the subthalamic nuclei: two case reports and review of the literature
Background: Deep brain stimulation (DBS) of the subthalamic nuclei (STN) can result in depression despite the obvious motor improvement.
Case presentations: Two patients with serious life‐threatening depressive episodes are described. In the first case, the trigger for depression was a slight adjustment of the left stimulating electrode’s contact. In the second case, reducing both the dopaminergic therapy and the voltage of DBS resulted in the manifestation of depressive symptoms.
Conclusions: DBS‐induced depression possibly has pathogenetic differences from ordinary Parkinson’s disease depression. The STN region seems to be a sensitive zone that influences emotions.