Alzheimer's disease is a chronic neurodegenerative disease that starts slowly and gets worse over time. Alzheimer's disease (AD) accounts for 60% to 70% of cases of dementia. These people have short term memory loss which is the most common early symptom.
As the disease progresses over time, symptoms may include problems with language, disorientation (including easily getting lost), mood swings and loss of motivation, not managing self-care and behavioral issues. As a person's condition declines, they often withdraw from family and society and gradually, bodily functions are lost, ultimately leading to death.