Cotards syndrome is an extremely rare condition in which the afflicted person thinks their dead or dont exist. How do you live with thinking youre not alive?\r<br>\r<br>There are people who are alive, but who are convinced they are dead. Its called Cotard Syndrome and its one of the most bizarre and intriguing disorders weve .\r<br>\r<br>\r<br>\r<br>A mental illness that makes the patients believe that they are dead. RELATED INFO: \r<br>\r<br>Cotards syndrome, also known as Walking Corpse syndrome, is a rare disorder that causes sufferers to believe they are dead. The exact cause is unknown.