1. as he is suffering from BP and diabetes
also,make sure they are within normal limits, as high blood sugar and blood pressure also contribute to altered sensorium like state.
2. regarding Dementia
, he has to be evaluated for Neurological examination for "Tests of Memory" .
3. your doctor might ask for relevant lab investigations (Vitamin B12
,thyroid profile, along with CT-Head for any AD, multi infarct dementia,NPH, or for any malignancy.
4. because there is memory loss
, In Ayurveda we treat on the lines of "Apasmaar" i.e.:
. mahakalyan ghrita 12gm before food with hot water (in divided doses)
. mansmitra vatkam 1 tab at bed time.
. smriti sagar ras 250 mg
brahmi vati 250 mg
vacha churna 500mg twice a day with honey.
5. Avoid heavy-slimy-incompatibile food,alcohol, excess mental stress/ grief/ sorrow, anger, long night wakings.