My husband and I went out to take care of the garbage (we told Mom we were taking the garbage out) and we were outside maybe 10 minutes because we had a lot of stuff in the garage to get rid of. When we came inside Mom was in a panic, and yelled at us, asking where we'd been. She was shaking all over, said she been looking for us and was ready to find a weapon. We told her we had been taking the trash out, and she snapped, "Well you sure took a long time about it". Not like Mom at all. She's also shown some occasional memory issues - could this be a symptom of Alzheimer's or do you think I'm overreacting?