What is young-onset Alzheimer's?

Young-onset Alzheimer's disease is an uncommon form of dementia that affects people younger than age 65. The condition also is called early-onset Alzheimer's disease.

Most people with Alzheimer's are age 65 and older. About 1 in 9 people age 65 and older in the United States has Alzheimer's disease. About 110 of every 100,000 adults between ages 30 and 64 have young-onset Alzheimer's.