Author Terry Pratchett has spoken out about the great stigma surrounding Alzheimer's disease and dementia.
Best-selling novelist Terry Pratchett was diagnosed with early onset Alzheimer's disease last December.
Terry Pratchett's Alzheimer's shock came as a great shock to his many fans and his decision to "come out" was seen as a very brave move.
He said: "It's a strange life when you 'come out' - people get embarrassed, lower their voices and get lost for words.
"What is needed is will and determination. The first step is to talk openly about dementia because it's a fact, well enshrined in folklore that if we are to kill the demon then first we have to say its name."
Figures show that one in three people over the age of 65 will die with a form of dementia.
It is estimated that 700,000 people in the UK have a form of dementia, half of whom have Alzheimer's disease.
The Department of Health said the problems would be addressed in a National Dementia Strategy to be published in November.
"There is no doubt also that we need better diagnostic services, and more effective peer support networks."