Hello @farmerleebs and welcome to Mayo Connect. Thank you for posting your concerns about your mom in our Parkinson's discussion group. How long due the unresponsive episodes last? Several hours or less than that? When your mom went to the hospital do you recall what kind of tests she had? Was an MRI done? What about an EEG (where they put electrodes on the head to determine brain wave activity)?

How long do these unresponsive episodes last (for several hours or less than that) and how often do they occur? Has she had a work up with a movement disorder specailist? A movement disorder specialst is a neruologist who has special training in disorders like PD.

Here is a link to a website from Mayo Clinic that lists different reasons for unresponsive episodes. I would encourage you to read it.
https://www.mayoclinic.org/search/search-results?q=unresponsiveness
As you can see, others in this group have discussed unresponsivness in elderly parents who have PD. I would encourage them to share with you their findings. I would like to invite @bethv, @mshoggie and @judithanne to share with you as well.