| Stage | Common Behaviors |
|---|
| Stage I (early stage, mild dementia) | Loss of short-term memory |
| Decreased judgment (safety concern) |
| Inability to perform mathematical calculations |
| Inability to comprehend abstract ideas |
| Stage II (middle stage, moderate dementia) | Difficulty with speech and language (aphasia, anomia) |
| Labile personality changes |
| Changes in usual grooming habits |
| Inability to remember purpose of items (apraxia) |
| Urinary incontinence |
| Wand ering |
| Seizures |
| Psychotic behaviors, such as hallucinations and paranoia |
| Depression |
| Stage III (late stage, severe dementia) | Inability to perform activities of daily living, such as eating, dressing, and bathing; requires total care |
| Inability to walk, toilet, swallow |
| Minimal or no communication |
| Eventually becomes bedridden and develops complications of immobility, such as pneumonia, pressure ulcers, and constipation |