Psychiatric symptoms such as delusions and aggression are frequently observed in patients with Alzheimer's disease (AD), but few studies examined the association of these symptoms with confabulations. We studied 32 AD patients and 10 age- and education-matched healthy older adults. The AD patients were divided into delusion/aggression and non-delusion/non-aggression groups based on their behavi...

Recent papers on the Capgras delusion have focused on the role played by subpersonal abductive inference in the formation and maintenance of the delusional belief. In these accounts, the delusional belief is posited as the first delusion-related event of which the patient is conscious. As a consequence, an explanatory role for anomalous patient experience is denied. The aim of this paper is to ...

One of the central debates concerning delusion has to do with the role played by faulty hypothesis formation and other cognitive errors. Top-down models assign causal power to such errors in generating delusions, whereas bottom-up models regard these same cognitive errors as at least secondary to (and in some cases derivative from) the delusional experience. We support a bottom-up model of delu...

This report presents a 52-year-old woman who was admitted to nephrology ward with hypernatremia. She shared a persecutory delusion of poisoning with her 22-year-old daughter and did not feed her 8-year-old son due to her delusion.

This case report describes Capgras delusion occurring in a previously well 63 year old woman following correction of severe hyponatraemia. It raises interesting points of discussion around etiological models to explain Capgras delusion and the neuropsychiatric complications associated with the correction of severe hyponatraemia (German J Psychiatry 2010; 13 (4): 175-177).

Young and colleagues (e.g. Young, A. W., & Leafhead, K. M. (1996). Betwixt life and death: case studies of the Cotard delusion. In P. W. Halligan & J. C. Marshall (Eds.), Method in madness: Case studies in cognitive neuropsychiatry. Mahway, NJ: Lawrence Erlbaum Associates.) have suggested that cases of the Cotard delusion (the belief that one is dead) result when a particular perceptual anomaly...