Delusional disorder refers to a condition in which an individual displays one or more delusions for one month or longer. Delusional disorder is distinct from schizophrenia and cannot be diagnosed if a ...

Delusions are a symptom of psychosis. They involve strong beliefs in something that is not true. Certain mental health conditions, such as schizophrenia and delusional disorder, often involve ...

A patient lies in a hospital bed in the neurological ward, his head wrapped in bandages. He’s just suffered a major trauma to the brain. The injury has wiped out the region that controls motion in his ...