Over 10 yrs ago my husband was diagnosed for dementia by a neurologist. He was prescribed memantine & Donepizel which he has been on from the onset. Our family Dr has continued prescribing them. It has been the last couple of years that seem more obvious about his dementia. Constantly asking the same question, one moment he’ll ask me if I know his wife and later he’ll know who I am. I see people saying one is in stage 3 or stage 4. What is the criteria for the different levels? We were never told what stage he is in but we can see the slow loss of knowledge. From the beginning of this journey I said I can handle it we were able to socialize and do things together. Now the best is going to the doctors and food shopping. He is tired and sleeps a lot.