Dementia affects the normal working of the brain. This can lead to a decline in a person's mental ability and may affect:

  • memory
  • thinking
  • problem solving
  • concentration
  • perception

Types of dementia

There are many types of dementia. The most common forms are Alzheimer’s disease, vascular dementia and dementia with Lewy bodies.

Symptoms of dementia

You should seek help immediately if your memory is not as good as it used to be, especially if you:

  • struggle to remember recent events, although you can easily recall things that happened in the past
  • find it hard to follow conversations or programmes on TV
  • forget the names of friends or everyday objects
  • cannot recall things you have heard, seen or read
  • notice that you repeat yourself or lose the thread of what you are saying
  • have problems thinking and reasoning
  • feel anxious, depressed or angry about your forgetfulness
  • find that other people start to comment on your forgetfulness
  • feel confused even when in a familiar environment