Dementia progression varies greatly, but generally moves through early, middle, and late stages, with Alzheimer's averaging 8-10 years from symptoms to death, while other types like Frontotemporal or Lewy Body can range from 4-8 years, or even faster, though rare forms like CJD can progress in months. Key factors influencing speed include the specific dementia type, the person's age, overall health, and genetics, with faster decline often linked to younger age or other conditions like heart disease.
Stage 7 is considered the end-stage of dementia. At this stage the patient has met all previous stages and is no longer able to provide self-care. Patients will progressively: Lose the ability to talk and make their needs known.
You can live with dementia for an average of 4 to 10 years after diagnosis, but this varies significantly, with some people living 20 years or more, depending on age, overall health, and dementia type, with Alzheimer's averaging 8-10 years and vascular dementia closer to 5 years. Factors like diagnosis stage, age, gender, other health conditions (e.g., heart disease, frailty), and dementia subtype greatly influence life expectancy, with people often succumbing to infections or complications rather than the disease itself.
Falling can occur in middle to late-stage dementia due to a decline in motor function, balance issues, and spatial awareness problems. As dementia progresses, the brain's ability to coordinate movement decreases, making falls more frequent.
Alzheimer's disease typically progresses slowly in three stages: early, middle and late (sometimes referred to as mild, moderate and severe in a medical context). Since Alzheimer's affects people in different ways, each person may experience dementia symptoms — or progress through the stages — differently.
Smoking, low physical activity, and a poor diet are all lifestyle and environmental influences that have been linked to rapid dementia decline. Physical activity promotes cardiovascular health, which in turn improves brain function. Those who lead a sedentary lifestyle may experience faster cognitive decline.
The "2-finger test" for dementia involves an examiner showing a hand gesture (like interlocking index and middle fingers) and asking the patient to copy it, testing motor skills, visual memory, and coordination, as difficulties can signal early cognitive decline, but it's a screening tool, not a definitive diagnosis, prompting further medical evaluation. Other related tests include finger-tapping and finger-to-nose, looking for hesitation or misjudgment in movement.
Rapidly progressive dementias (RPDs) are dementias that progress quickly, typically over the course of weeks to months, but sometimes up to two to three years. RPDs are rare and often difficult to diagnose. Early and accurate diagnosis is very important because many causes of RPDs can be treated.
When someone gets the diagnosis of dementia, a cure is only very rarely possible (see p2 About Reversible Dementias). In the current issue of Neurology, Sacks and Shulman1 report one of these rare cases of a reversal of dementia involving a patient on steroid medication.
Remaining at home but with extra support can be a good option for some people with dementia. It allows them to stay in a place that feels familiar and safe to them. It is important to make sure that the person can remain safe and well and get the support they need at home.
The number one cause of dementia is Alzheimer's disease, responsible for 60-80% of all cases, characterized by brain plaques (beta-amyloid) and tangles (tau protein) that damage nerve cells. Other common types of dementia include vascular dementia (from blood vessel issues/strokes), Lewy body dementia, and frontotemporal dementia, with many cases often being mixed forms.
Even though a person with dementia may end up sleeping more than a typical person of their age – even as much as 14–15 hours a day – it is unlikely to all be good quality sleep. Sleeping a lot can also be influenced by people's sleeping patterns before they had dementia, as some people need more sleep than others.
Although Alzheimer's disease is still the most common type of dementia in people under 65, a higher percentage of people in this age group may develop frontotemporal dementia than older people. Most cases are diagnosed in people aged 45-65.
Many people affected by dementia are concerned that they may inherit or pass on dementia. The majority of dementia is not inherited by children and grandchildren. In rarer types of dementia there may be a strong genetic link, but these are only a tiny proportion of overall cases of dementia.
Final Stages of Dementia
This can inhibit basic bodily functions, such as heart rate and breathing. Historically, associated complication(link is external and opens in a new window) like respiratory or urinary tract infections and falls have been the cause of death as dementia progresses.
The term "sundowning" refers to a state of confusion that occurs in the late afternoon and lasts into the night. Sundowning can cause various behaviors, such as confusion, anxiety, aggression or ignoring directions. Sundowning also can lead to pacing or wandering. Sundowning isn't a disease.
You Miss Out on Sleep
You do a few things you know you shouldn't -- we all do. But some of those bad habits can take a toll on your brain. For example, lack of sleep may be a cause of dementia, including Alzheimer's disease. It's best to have regular sleeping hours.
Life expectancy with dementia varies greatly but averages a few years to over a decade, often 4 to 8 years for Alzheimer's, depending heavily on age at diagnosis (younger means longer), type (Alzheimer's generally longer than Vascular), and other health conditions, with newer research showing averages like 5.1 years for women and 4.3 for men from diagnosis, but with wide ranges from shorter for older adults to longer for some.
While family caregivers often provide the primary daily support for individuals with dementia, legal responsibility for decision-making and financial management can fall to spouses, adult children (depending on filial responsibility laws), or court-appointed guardians or conservators, especially in the absence of a ...
As a general rule, dementia does not progress overnight. Such a rapid worsening of both behavioral and cognitive problems signals a medical problem or medication adverse effect that must be carefully and correctly assessed, diagnosed and then treated.
People with symptoms of dementia are given tests to check their mental abilities, such as memory or thinking. These tests are known as cognitive assessments, and may be done initially by a GP. There are several different tests. A common one used by GPs is the General Practitioner Assessment of Cognition (GPCOG).
Age. The biggest risk factor for dementia is ageing. This means as a person gets older, their risk of developing dementia increases a lot. For people aged between 65 and 69, around 2 in every 100 people have dementia.
The SAGE test is a short, self-administered evaluation that screens for early signs of memory or thinking problems like dementia. You take it on your own, at home or at your provider's office. It's simple and there's no studying needed. It can catch issues early.