A delusion is a fixed, relatively immutable, persistent, false belief with no basis in reality. Source: Piotr Marcinski/Shutterstock We talk often about "deluded" people: “The person on the talent ...

Delusions (or strongly held false beliefs) are a common symptom for a person with dementia. They can take the form of paranoia, which makes the person feel threatened, even if there is no or little ...

Beliefs are convictions of reality that we accept as true. They provide us with the basic mental scaffolding to understand and engage meaningfully in our world. Beliefs remain fundamental to our ...

Julia Sheffield, Ph.D., a clinical psychologist at Vanderbilt University Medical Center, has dedicated her career to solving the mysteries of psychosis. As a clinician, Sheffield, the Jack Martin, MD ...

Delusions of grandeur, also known as grandiose delusions (GDs), are a type of delusion, or false belief. People who experience delusions of grandeur may believe they are famous, God-like, wealthy, ...

People experiencing delusions during an episode of psychosis may be ‘living out’ a deeply held emotion, according to new research that provides a ‘radically different perspective’ on one of the most ...

Schizophreniform disorder presents with the same symptoms as schizophrenia, including hallucinations, delusions, and disorganized thoughts, but lasts for a shorter duration (between 1 and 6 months).