psychosis
"For years, my Dad had really bad anger issues. He continually kept my Mom in turmoil with his fits of rage to the point that one day she had a Stroke. It was horrendous. When both of them went to a Nursing Home, my Dad was evaluated and diagnosed as being psychotic. The Doctor prescribed Haldol for him and within 3 days, he was a brand new person. He was calm, he laughed, and he was such a joy to visit with. He remained this way until he passed away 5 years later.  If he had been given this medicine years before, I feel my Mom would have lived another 20 years."