My father sexually abused me for 16 years of my life from an early age. He is now 90 and has dementia/Alzheimer's. He hasn't acted inappropriately toward me for 40 years. However, on a recent visit (he and my mom still live on their own), he touched me inappropriately, made lewd remarks to me and exposed himself to me. Each of these incidents took place while my mom wasn't in the room (just like it was when I was a child). While I thought I could handle it, emotionally I was taken back to a place I never wanted to revisit. I am unable to fine any research on the subject of sexual offenders and dementia. I called his neurologist and asked for a return call - nearly 2 weeks later I still haven't heard from him. I spoke with his Primary Care Dr. who said the medication he is taking for Parkinson's may increase his dopamine levels which in turn increase his libido. While I know that sexual aggression is common in people with dementia, I am extremely concerned about his behavior due to my history. I repeatedly told him his behavior was highly inappropriate and walked away, but I wanted to run as far away as I could get. I've warned my mother of the behavior and asked her to stay close to him when they are in public keeping her eyes and ears open - she may need to diffuse a situation. Worse - what if he actually touches someone or says something vulgar and they file criminal charges??? I am unnerved by these incidents. I need to assess their living situation on a quarterly basis (they are on the East Coast and I am in the Southwest). I do not think I can put myself in that vulnerable position again ....how do I handle this??