Memory loss (amnesia) is unusual forgetfulness. You may not be able to remember new events, recall one or more memories of the past, or both. The memory loss may be for a short time and then resolve (transient). Everyone forgets things at times. How often have you misplaced your car keys or forgotten the name of a person you just met? Some degree of memory problems, as well as a modest decline in other thinking skills, is a fairly common part of aging. There’s a difference, however, between normal changes in memory and memory loss associated with Alzheimer’s disease and related disorders. And some memory problems are the result of treatable conditions.