My Dad is 73 ,he is diabetic and has had a high BP since 10 years.since last six years his memory started to reduce and now is getting worse. We want guidance on how to take care or should we consult any specialist . He asks the same question continuously for hours.noe a days he is not sleeping in the night.he roams the house and keeps meddling with things.. sometimes we get irritated and frustrated..we know we can't cure it and his condition is affecting my mom as she is one who takes care of him mostly and she is 66 and devloped high BP last year.need help