question: My father is 74. He has been having episodes where he doesnt know what day it is or if he has eaten or showered that day. He was recently diagnosed with Parkinson s disease with a chance of dementia. They did an MRI on Monday. It says Minimal Involutional Changes Appear Chronic. He is also very moody and saying hateful and hurtful things. He has always been difficult to deal with but he is getting really bad. My first thought was Alzheimer s. Any suggestions?