Teaching Video NeuroImage: String Hallucinations in Parkinson Disease

Apart from the commonly described passage (a brief hallucination of a person, animal, or object passing sideways, within the periphery of the visual field) and presence (sensation of someone or something being present nearby, in the absence of seeing it) hallucinations, a multimodal (visual and tactile) hallucination can be seen in patients with advanced PD, mostly with dementia. The patients described here did not have any fluctuating cognition or other well-formed visual hallucinations as seen in dementia with Lewy bodies (DLB). An atypical antipsychotic like quetiapine is helpful to control such complex forms of hallucinations.