My dad diag 11/16 got very agitated, manic the week he started radiation and then didn't return to normal until about 2 weeks after he finished radiation. He was very agressive and seemed violent and then it seems overnight it went away and he is now my dad again. I have a 22mth old and I was very scared us all being under one roof, but now he's wonderful with her. there is still some underlying agrevation but his memory is getting really bad and he seems to be in more pain so I think it's more stress agrevation now. Hang in there, it does get better (at least it did for us) but it is REALLY rough going through the mental aspects of this disease and what's worse is your (at least we weren't) given any information so that we expected or were prepared for it. You forget alot of the bad times because your so relieved when your loved one acts like your loved one again. Now every day is a blessing that we get to spend together.