<unk> s of negation are the central symptom in<unk> 's syndrome. The patient usually denies their own existence, the existence of a certain body part, or the existence of a portion of their body.<unk> 's syndrome exists in three stages: # Germination stage: symptoms of psychotic depression and of hypochondria appear; # Blooming stage: full development of the syndrome and<unk> s of negation; and; # Chronic stage: continued severe<unk> s along with chronic psychiatric depression.<unk> 's syndrome withdraws the afflicted person from other people due to neglect of their personal hygiene and physical health.<unk> s of negation of self prevent the patient from making sense of external reality, which then produces a distorted view of the external world. Such<unk> s of negation are usually found in schizophrenia. Although a diagnosis of<unk> 's syndrome does not require the patient's having had hallucinations, the strong<unk> s of negation are comparable to those found in schizophrenic patients. Distorted reality The article Betwixt Life and Death: Case Studies of the<unk>  (1996) describes a contemporary case of<unk> 's<unk>  which occurred in a Scotsman whose brain was damaged in a motorcycle accident: The article Recurrent Postictal Depression with<unk>  (2005) describes the case of a 14-year-old epileptic boy who experienced<unk> 's syndrome after seizures. His mental health history showed themes of death, chronic sadness, decreased physical activity in playtime, social withdrawal, and disturbed biological functions. About twice a year, the boy suffered episodes that lasted between three weeks and three months. In the course of each episode, he said that everyone and everything was dead (including trees), described himself as a dead body, and warned that the world would be destroyed within hours. Throughout the episode the boy showed no response to pleasurable stimuli and had no interest in social activities.
Cotard delusion
Fregoli delusion
Capgras delusion
Monothematic delusion
Homicidal ideation
Pectoriloquy
Persecutory delusion
Grandiose delusions