Abstract
AbstractPsychosis is a known neuropsychiatric feature in Lewy body disease. While visual hallucination remained the most common form of psychosis, a minor proportion of patients suffer from multimodal psychosis in Parkinson's disease (PD). However, current research does not always specify whether multimodal psychosis is manifested in an independent, sequential, or concomitant manner. As such, studies addressing brain–behavior relationship of multimodal psychosis remain sparse. In this paper, we described a case of PD multimodal psychosis manifesting as a phantom bedside intruder, where the patient episodically “felt” the presence and “heard” the breathing sound of the “person” without visualizing him. [18F]fluorodeoxyglucose‐positron emission tomography scan showed predominant hypometabolism in brain regions involving the bilateral insula, superior temporal gyrus, supramarginal gyrus, and anterior cingulate. The unusual multimodal phantom bedside intruder phenomenon observed in this case is likely a result of combinational dysfunction of bilateral temporal parietal lobes.
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