Cotard delusion is a rare Mental Illness where the sufferer has delusions that they are dead and walking amongst the living and decomposing like zombies or have lost their blood and internal organs but in 59% of cases, sufferers believe that they are immortal.
Symptoms include, denial of ones own existence, denial of a certain body part or a portion of their body, along with psychotic depression.
Lack of personal hygiene and physical health withdraws the afflicted person from other people. The delusions prevent the sufferer from making sense of external reality which then produces a distorted view of the external world around them. This disorder, (although rare) is mostly present in people who suffer from schizophrenia. Other causes could be due to significant brain damage to the cerebral hemisphere frontal lobe. Sounds absolutely terrifying.
