EpistemisAllopsychic disorientation
Specialty: Psychiatry.
Why it occurs
- Delirium or acute confusional syndrome of organic cause (urinary infection in the elderly, pneumonia, hypoxia, hydroelectrolyte imbalance)
- Advanced dementia (Alzheimer's, vascular, Lewy bodies)
- Wernicke's encephalopathy (thiamine deficiency due to alcoholism)
- Head trauma
- Intoxication by anticholinergics or other drugs (benzodiazepines, opiates)
- Kleist-Leonhard confusional psychosis
Initial workup
Emergency analysis with blood count, electrolytes, creatinine, urea, glucose, arterial blood gases, transaminases; systematic and culture of urine; levels of thiamine, vitamin B12; Emergency non-contrast brain CT; Lumbar puncture if meningitis is suspected.
red flags
Sudden onset of disorientation accompanied by fever, neck stiffness, anisochoric pupils, or fluctuations in level of consciousness, suggesting neuroinfection, acute stroke, or intracranial hemorrhage.
Standard management
- Treat the underlying medical cause — p. e.g., antibiotics for infection, hydration for dehydration
- Thiamine (vitamin B1) 100-500 mg IV/IM before any glucose administration if alcoholism or malnutrition is suspected
- Haloperidol at low doses (0.5 - 2 mg orally or IM, drug of choice for the management of psychomotor agitation in organic delirium; *avoid benzodiazepines except in alcohol withdrawal as they worsen delirium*).
Educational guidance for study. It is NOT a prescription recommendation. The actual choice depends on the cause, the patient, and current guidelines.
- Area
- Psychiatry
- Listed causes
- 6
- Treatment options
- 3