In general, the development of dementia can be divided into three stages. The number of tasks people with dementia can perform independently decreases as dementia progresses.
| Tasks | Early stage |
Moderate stage |
Late stage Year 8-10 |
|---|---|---|---|
| Handling complicated issues, such as transactions in a bank account | ✘ | ✘ | ✘ |
| Finding the way in familiar environments | ✔✔ | ✔ | ✘ |
| Telling the time and date | ✔✔ | ✔ | ✘ |
| Maintaining social manner | ✔✔✔ | ✔ | ✘ |
| Verbal expression | ✔✔ | ✔ | ✘ |
| Independence in daily living activities | ✔✔ | ✔ | ✘ |
| Urinary and fecal control | ✔✔✔ | ✔ | ✘ |