<s>[INST] I have a friend whose sister is dealing with a sort of dementia she doesn t remember who she is at times and wonders off and gets combative at times she has had a nervous breakdown in past and her dad died from alzhimers deases im trying to lead them in right direction sheonly has il. Medicaid the doctor has done scans but I think she needs to go to someone who deals in these arethe scan doesn t show signs of dementia so they say but she deffently needs help [/INST] Hello, dementia is a chronic irreversible memory loss which I can say your friends' sister is not suffering from. Since she has past history of nervous breakdown, and her father has died and may be her childhood experiences are not good, so the chances are high that she is suffering from "DISSOCIATIVE AMNESIA". There is no such tests which can confirm that she has dissociative amnesia except history and clinical examination. In dissociative amnesia, due to some past bad experiences, patient sometimes completely forgets who is he/ she? May forget her family members as if she has memory loss but sooner or later she will start recognizing them. In CT scan, the report will be normal. In Dementia, lost memory is mot regained cognitive impairment is irreversible as I have already mentioned. You should consult a good psychiatrist. I hope this answer helps you. Any more queries, You are most welcome. </s>