Mental state - delirium vs dementia vs psychosis
see also:
| | Delirium | Dementia | Psychosis |
| Onset | Rapid | Slow | Rapid |
| Pattern | Fluctuating | Fluctuating-stable | Stable |
| Oriented | No | Yes | No |
| Attention | Disordered | Normal | Delusional |
| Cognition | Disordered | Impaired | Selectively impaired |
| Speech | Incoherent | Perseveration | Rapid pressured |