I try not to contradict Ken if it is not a matter of life and death. His doctor administered the MOCA TEST when we went in concerned about his memory. From then on she refers to us as a Team and I think that helps create the best attitude for the two of us. As a team we go to all his doctor appointments together. We go to his physio appointments and I say (while holding eye contact with her) that my husband has memory problems and to handle all correspondence etc. through me. She gets it. I find saying memory problems is currently less provoking. The word dementia would shut him down. Unless it is important, I let him say what he thinks without correcting him. Less stressful for both of us.