Is there a setting where you could get your medications balanced? It sounds like your "rage" might be beyond your control? My husband has some issues with dementia, and while it is not the same, I wonder if staying hydrated, avoiding sugar and substitutes and revamping your diet to non-processed would help. A daily habit of taking walks might also help reduce stress-rage. Eliminate frustration by keeping things simple, setting a schedule and writing down tasks to be done as well as other coping skills. I think when one is in the midst of this it can be difficult to make a plan, but Habits can work through.