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).