Individuals with delusions firmly believe in something untrue. For example, they may believe that someone is trying to attack or kill them or that they are someone they are not, such as the president ...

Believing you're being watched or targeted can be a symptom of delusional disorder—not just a conspiracy belief. Here's how ...

Beliefs remain fundamental to our behavior and identity, but are not well understood. Delusions, on the other hand, are fixed, usually false, beliefs that are strongly held, but not widely shared. In ...

Delusions are fixed beliefs that do not change, even when a person is presented with conflicting evidence. Delusions are considered "bizarre" if they are clearly implausible and peers within the same ...

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 ...

Delusions—fixed false beliefs—can be tricky to study. And it's not yet clear how the brain gives rise to these departures from reality. Further, there are many types of delusions. Those with ...

A new study provides a novel theory for how delusions arise and why they persist. NYU Langone Medical Center researcher Orrin Devinsky, MD, performed an in-depth analysis of patients with certain ...

From calling yourself "delulu" to saying you're in a "delusionship," the word delusional has become a prominent part of cultural slang. But I'm not sure it should be. With these terms being so ...

Useful Delusions: The Power and Paradox of the Self-Deceiving Brain, by Shankar Vedantam and Bill Mesler A few years ago, former NPR journalist and Hidden Brain podcast host Shankar Vedantam became ...

Delusions are fixed beliefs that do not change, even when a person is presented with conflicting evidence. Delusions are considered "bizarre" if they are clearly implausible and peers within the same ...

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, ...