It would be fair to say many of us believe the stand-out sign of Alzheimer's is memory loss.
But a new study warns that isn't the case.
In fact, it claims there are numerous symptoms of the degenerative disease which often go unnoticed, meaning many people are not diagnosed until much later than they could be.
The latest research from Northwestern University's Cognitive Neurology and Alzheimer's Disease Centre seeks to change our preconceptions.
"We wanted to describe these individuals to raise awareness about the early clinical and brain features of PPA [primary progressive aphasia] to develop metrics which would advocate for their inclusion in clinical trials targeting Alzheimer's disease," Dr Emily Rogalski told the Daily Mail.