Hi. My mum has mixed Alzheimer's/Vascular dementia (18 months from diagnosis now). In the last two weeks she has become convinced that she is not in her own home, although she is actually in her home of the last 50 years, with my Dad. She says she wants to pack up her belongings and go home. She gives her actual home address when she says where home is, so she's not thinking of her childhood home. This is causing my Dad a lot of distress (he doesn't handle this kind of thing well and tries to convince her she is in her own house - we have tried to get him to see this is not going to work). Does anyone else have experience of a fixed idea like this? Does it disappear eventually?