Previous research, for example, has found that some people who believed that family members were replaced by impostors (known as Capgras delusion) had deficits in processing familiar faces ...

Delusions and hallucinations are both symptoms of psychosis and can arise for a variety of mental health or medical disorders.

And we discover that delusions can occur both when people are unwell — for example, with depression, anxiety, schizophrenia, bipolar disorder, autoimmune problems, or in intensive care — and ...

A delusion is a “fixed false belief that is not based in reality,” according to Penberthy. “For example, someone might believe the FBI is tracking them, which is a paranoid delusion or that ...