When our dad started to exhibit strange behavior - like causing an uncharacteristic commotion in the middle of the night - our friend Betsy said, “Check to see if they’ve changed any of his medications.”  Quite honestly, the very first time she said this to us (she eventually said it many times), we thought it was a little farfetched.  After all, he was with medical professionals and they’d certainly see the connection if one existed.  But we asked anyhow, and, sure enough, they had changed his sleeping meds the very night of the first incident.  They missed the connection because they didn’t recognize our dad’s behavior as uncharacteristic.  As happens so often, they simply didn’t know him and had nothing to compare his behavior to.  Our dad’s medication changed frequently and often there was some sort of odd reaction.  We learned to ask:  Has any medication been changed?