Cognitive decline
Cognitive disturbances come in a variety of forms and degrees, and they can be frightening. You may find it difficult to concentrate in school or at work. Your memory may include lapses that were not previously present. You might have to reach for a recognizable name. You could notice that you're digesting information more slowly. You may forget how to get to a familiar location whether driving or utilizing public transportation.
You might also be perplexed as to where you are or why you are there. You can go to a place to shop but completely forget what you were meant to seek. You may ascribe this to stress or aging at first, but the reduction in capacities may concern you.