The term senile dementia of the Alzheimer type (SDAT) was used for a time to describe the condition in those over 65, with classical Alzheimer's disease being used to describe those who were younger.
Begrebet senil demens af Alzheimer-typen (SDAT) blev for en tid anvendt til at beskrive tilstanden hos mennesker over de 65, mens "klassisk" Alzheimer blev anvendt om yngre personer.