Complex visual hallucinations in a blinded visual field are an under-appreciated phenomenon. Both a stimulating phenomenon and a release phenomenon have been suggested as explanations for these hallucinations. However, the mechanisms of complex visual hallucinations in patients with visual field defects due to intracranial diseases are still controversial. A patient with complex visual hallucin...

Charles Bonnet Syndrome (CBS) is a common cause of visual hallucinations seen in elderly people with visual impairment. Well-formed visual hallucinations in clear consciousness with preserved insight are commonly reported in literature. We report a case of CBS having multisensory hallucinations. An elderly patient with visual impairment fulfilling the criteria of CBS presents with various modal...

Pathophysiology of hallucinations in Parkinson's disease is poorly understood. This study investigated relationships between visual hallucinations and visual acuity. Twenty-six consecutive patients with Parkinson's disease participated in this study. Patients were divided into two groups: patients with visual hallucinations (VH group) and those without visual hallucinations (no-VH group). Unaid...

From 120 patients with an homonymous hemianopia 16 experienced complex visual hallucinations in the hemianopic field. The brain lesion was located in the occipital lobe, though damage was not limited to this area. Complex hallucinations appeared after a latent period. They were weak in colour and stereotypical in appearance, which allowed differentiation from visual hallucinations of other caus...

Patients rarely experience visual hallucinations while being observed by clinicians. Therefore, instruments to detect visual hallucinations directly from patients are needed. Pareidolias, which are complex visual illusions involving ambiguous forms that are perceived as meaningful objects, are analogous to visual hallucinations and have the potential to be a surrogate indicator of visual halluc...

Various hallucinations are unpleasant not only for patients with Parkinson’s disease (PD), but also for their caregivers. Visual hallucinations are a well-recognized problem. Auditory and other types of hallucinations are generally accompanied by visual hallucinations. Tactile hallucinations (THs) rarely occur in patients with PD.

BACKGROUND Hallucinations are a core diagnostic criterion for psychotic disorders and have been investigated with regard to its association with childhood trauma in first-episode psychosis samples. Research has largely focused on auditory hallucinations, while specific investigations of visual hallucinations in first-episode psychosis remain scarce. OBJECTIVES The aims of this study were to d...