paranoia
mother of 2, my mum had terrible paranoia, we did not even know that she had alzheimers at the time - daft as that may seem.
She is now on medication for anxiety, depression and anti psychotics - which is another story! but, the paranoia has definitley improved, but not completely gone away. Apparently, mum has middle stage alzheimers, I would only be guessing as to whether the paranoia started in the early stages or not.