kittylester - the reason I said 'official' diagnosis was because the family have noticed a steady decline in mum's memory and mental capacity during the past few years, but nobody mentioned the 'D' word, and there had been no actual diagnosis from a doctor. Fortunately our local NHS offers a memory clinic (CMAS - Community Memory Assessment Service), where, once I had referred her, she was given memory tests, a brain scan and an interview with a psychiatrist specialising in old age. After this, mum had the 'official' diagnosis via the GP. This, I believe, makes it easier to access Attendance Allowance if needed and other forms of help. CMAS have some practitioners who are prescribers can prescribe memantine. I'm not sure whether such a service is available nation wide. If it isn't, it should be!