The terminology changed after 1977 when a conference on AD concluded that the clinical and pathological manifestations of presenile and senile dementia were almost identical, although the authors also added that this did not rule out the possibility that they had different causes.
Terminologien blev ændres efter 1977, da en konference om AD konkluderede, at de kliniske og patologiske manifestationer af præsenil og senil demens var mere eller mindre identiske - omend forfatterne påpegede, at dette ikke udelukkede muligheden for, at de havde forskellige årsager.