Alzheimer’s disease is the sixth-leading cause of death in the United States, and deaths from it increased 146% between 2000 and 2018, according to the Alzheimer’s Association. In 2020, Alzheimer’s disease and other dementias will cost the United States $305 billion. By 2050, that figure is expected to reach $1.1 trillion, according to the Alzheimer’s Association. In light of that, many understandably wonder what the signs of Alzheimer’s disease are, what behaviors usually plague some with the disease and what is the best way to treat and socialize with someone suffering from Alzheimer’s disease. “The last thing you want to do is correct somebody,” Hochhalter said.