Cotard delusion

A rare delusional disorder linked to depression, suicidal ideation, sleep deprivation or derealisation, in which a person believes he/she is dead or dying, doesn’t exist, is putrefying, or has lost his/her blood or internal organs
Management Tricyclic antidepressants, serotoninergics

Cotard delusion

[J. Cotard, Fr. neurologist, b. 1840 d. 1889]

Delirium of negation.