—A long-term study, which followed patients for 25 years, found that individuals with schizophrenia and other psychoses were at higher risk of mild-to-moderate and severe impairment relative to adults ...

Overuse of marijuana is increasingly being linked to dangerous bouts of psychosis, and a new study finds that antipsychotics may be needed to keep such patients out of the hospital. Psychotic episodes ...

Doctors have long known that excessive marijuana use can trigger psychosis, especially in the young. But new research suggests the link is stronger that ever imagined before. Teens who use cannabis ...