It is common to forget one or two things occasionally, such as names. However, if your memory loss is severe enough to affect daily functioning, you might want to get it checked out.
People with Alzheimer’s forget things often, and are less likely to remember them afterwards. This usually happens with recent occurrences as Alzheimer’s affects short term memory first, before worsening to affect long term memory.
This can take the form of forgetting recently learned information or repeating the same story over and over. If you notice a loved one starting to rely more and more on memory aids (such as sticky notes), treat it as a warning sign.