The Smith Alzheimer's Center at SIU Medicine offers wrap-around care and support for families. Alzheimer’s disease is a brain disorder that slowly destroys memory and thinking skills, and, eventually, the ability to carry out the simplest tasks. In most people with Alzheimer’s, symptoms first appear later in life. Around 7 million Americans, most of them age 65 or older, have dementia caused by Alzheimer’s. Clinicians use several methods and tools to help determine whether a person who is having memory problems has Alzheimer’s disease. To diagnose Alzheimer’s, doctors may: Ask the person and a