In my previous posts, readers learned about delusions both as a symptom and as a condition called delusional disorder. The latter is marked by the presence of delusions in the absence of other ...

A delusion is a belief based on an inaccurate interpretation of reality, despite clear evidence to the contrary. A delusional disorder causes a person to have delusional thoughts for a prolonged ...

A new study from Simon Fraser University researchers has found a close link between high levels of social media use and psychiatric disorders that involve delusions, such as narcissism and body ...

Cotard's syndrome, a rare and intriguing neuropsychiatric condition, is principally characterised by nihilistic delusions in which individuals believe that they are dead or non-existent. Although not ...

Schizophrenia is a mental illness that affects how you think and behave. The symptoms of schizophrenia include: Many of the symptoms of schizophrenia are also symptoms of other conditions. Because of ...

Credit: Getty Images Some rare psychological disorders may occur so infrequently that most mental health professionals might never encounter them. Approximately 1 of every 5 adults in the United ...

Key points Delusional disorder can be hard to detect because the pathology is encapsulated and the person may seem very stable. If someone's delusion becomes believed by others and affects their ...