My mom has Parkinson’s as well. She is 83 years old. She just had her third unresponsive episode. She is also out for about an hour where she is totally unresponsive, she then wakes up with no recollection. Her vitals have been normal. She has gone to the hospital and they have not come to a conclusion about what is causing these episodes. Sorry I am not much help at all except for understanding what you go through.