Psychosis closely corresponds to the general public's idea of "madness," and essentially involves loss of contact with reality—believing things that are not true and/or experiencing things that are ...

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 ...

Federal prosecutors have started describing some crimes as the work of "nihilistic violent extremists." One court filing described them as criminals who act "in furtherance of political, social, ...