The relationship between schizophrenia and frontotemporal dementia.

Schizophrenia is a relatively common disorder diagnosed by the presentation of psychotic symptoms in the absence of identifiable neurologic or other organic cause. Frontotemporal dementia (FTD) is a relatively rare progressive neurodegenerative disorder that can present with a multitude of cognitive and behavioral symptoms including psychosis. At times, this phenotypic overlap can mean that schizophrenia and FTD are 2 possibilities in the differential diagnosis of a psychotic presentation.

The Zeitraffer phenomenon, akinetopsia, and the visual perception of speed of motion: a case report.

The Zeitraffer phenomenon is the altered perception of the speed of moving objects. A single case is reported using the subject's own description of a transient alteration of the visual perception of motion. The literature on the subject is reviewed.

Psychiatric aspects of epilepsy.

Patients who have epilepsy face many challenges resulting from their illness and have frequent psychiatric comorbidities. Recognition of these disorders is increasing and is having a positive impact on patients' quality of life. Recent recommendations about a new classification system for psychiatric disorders related specifically to epilepsy and based on the relationship of symptoms to seizures, antiepileptic medications, and EEG changes should further research and treatment.

Seeking reversibility and treatability in dementia.

The search for "reversible causes" in the patient presenting with dementia has become a routine part of medical care. This article reviews evidence as to the prevalence of reversibility and concludes that actual reversal of dementia by treatment is rare. In this context, the utility of specific laboratory investigations is discussed, and commonly sought conditions, such as normal-pressure hydrocephalus and B12 deficiency, are reviewed.

The three cognitive examinations.

Cognitive dysfunction is a core feature of neuropsychiatric illness. We offer a framework or conceptualizing cognitive function and discuss bedside examination and neuropsychological assessment, as well as the limitations of these tools. We stress the clinical importance of executive cognitive dysfunction, and we provide guidance or its assessment.