About Alzheimer's Disease
- Dementia facts & figures
- Risk factors and risk reduction
- Symptoms of dementia
- Living with dementia
- Caring for someone with dementia
- Clinical trials
- Find local support
What is Dementia?
Dementia is an umbrella term for a collection of symptoms that are caused by disorders affecting the brain and( having a significant impact on ) or ( impacting ) memory, thinking, behaviour and emotion. The most common cause is Alzheimer’s disease, which affects 50-60% of people with dementia. Other types of dementia include vascular dementia, Lewy body dementia and fronto-temporal dementia. Dementia can also sometimes affect people who are under the age of 65. This is known as young onset dementia.
Our brains are made up of over 86 billion nerve cells – more than the stars in the Milky Way. Dementia damages these nerve cells so they are no longer able to communicate effectively and this impacts on how our body functions.
The specific symptoms a person living with dementia experiences will depend upon what parts of the brain are affected and/or the specific disease that is causing their dementia. Symptoms may include:
- loss of memory
- difficulty in finding the right words or understanding what people are saying
- difficulty in performing previously routine tasks
- personality and mood changes
Although each person will experience dementia in their own way, eventually those affected will be unable to care for themselves and need help with all aspects of daily life. Dementia is the leading cause of disability and dependency among the elderly.
Dementia affects more than 50 million people worldwide, with a new case of dementia occurring somewhere in the world every 3 seconds. Dementia can also affect individuals under the age of 65 (young onset dementia). Greater awareness and understanding of dementia is important to challenge the myths and misconceptions that surround the condition.
There is currently no cure for most types of dementia, but treatment and support are available.