Hallucinations: Or something else? Differential Diagnosis

Respiratory System (J00-J99)

  • Hypoxia (oxygen deficiency)

Eyes and eye appendages (H00-H59).

  • Blindness

Endocrine, nutritional and metabolic diseases (E00-E90).

  • Metabolic derailment (metabolic derailment), unspecified.

Liver, gallbladder, and biliary tract-pancreas (pancreas) (K70-K77; K80-K87).

  • Liver failure, unspecified

Neoplasms – tumor diseases (C00-D48).

  • Brain tumors, unspecified

Ears – mastoid process (H60-H95)

  • Deafness

Psyche – nervous system (F00-F99; G00-G99)

  • Senile dementia
  • Delirium tremens (alcohol withdrawal delirium)
  • Febrile delirium
  • Commotion psychosis (psychosis after concussion).
  • Mania
  • Narcolepsy – excessive sleepiness or sudden, insurmountable falling asleep during the day.
  • Post-traumatic stress disorder (PTSD).
  • Psychotic depression
  • Schizophrenia
  • Temporal lobe epilepsy – form of epilepsy in which the neuronal discharge is localized in the temporal lobe.

Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).

  • Extreme fatigue
  • High fever – leads to hallucinations, especially in children and in the elderly
  • Hypoxia (undersupply of the body with oxygen).
  • Illusion – in illusion, a real object is misjudged / misinterpreted.
  • Pseudohallucinations – sensory illusions in which the affected person recognizes their unreality.

Genitourinary system (kidneys, urinary tract – sex organs) (N00-N99).

  • Renal failure, unspecified

Other causes

  • Alcohol consumption, chronic
  • Drug use – amphetamines, cannabis (hashish and marijuana), crack, ecstasy (3,4-methylenedioxy-N-methylamphetamine), cocaine, LSD, solvents, etc.
  • Drug withdrawal
  • Extreme fatigue
  • Extreme situations
  • Near-death experience
  • Grief reaction

Medication

  • Side effect of medication, unspecified (e.g., overdosed tricyclic antidepressants).