Cotard's delusion: also known as walking corpse syndrome or Cotard's syndrome, is a rare disorder in which the affected person holds the delusional belief that they are dead, do not exist, are putrefying, or have lost their blood or internal organs
Le délire des négations: “the delirium of negation"
Somatoparaphrenia: a type of monothematic delusion where one denies ownership of a limb or an entire side of one's body. Even if provided with undeniable proof that the limb belongs to and is attached to their own body, the patient produces elaborate confabulations about whose limb it really is or how the limb ended up on their body
