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Associated symptoms
| Feature | Possible Cause |
|---|---|
| Vision loss | Charles Bonnet syndrome |
| Headache, nausea/vomiting | Migraine |
| Impaired/fluctuating level of consciousness | Delirium, epilepsy |
| Confusion/disorientation | Delirium, intoxication, encephalopathy, dementia |
| Focal neurologic signs | Space-occupying lesion |
| Agitation, depression, mania, anxiety, disordered/unusual thought content | Delirium, intoxication, psychiatric disorders (psychosis, severe mood disorders) |
