It is a condition that causes memory loss, mental deterioration and confusion, and the number of people developing dementia in our region is rising.
More than eighteen hundred people were diagnosed last year, bringing the total to more than twenty thousand.
However, as Dan Ashby reports, charities say nearly the same number again are living with Dementia - without knowing it.
You can watch his full report below.
More top news
A look ahead at the forecast for the Tyne Tees region.
Tributes have been paid to a man who died after collapsing and falling into the river in Durham at the weekend.
Stephen Miller's twentieth senior international season got underway last week at the Fazza International Athletics Competition in Dubai.