I know this isn't a medical forum, but I wonder if anyone can give me any insight into the following situation: About 5 minutes after my 91-year-old mother goes to the bathroom (on an elevated toilet seat), she has a "spell" in which she can't move. We are usually walking back to her recliner or bed, and she just stops and can't move anymore. She never passes out; she just says she can't move her legs anymore. At that time, we have to get her into a chair or she would fall. We have to remove her hands from the walker after she sits down.(she's gripping it so tightly). The "spell" lasts about 5 minutes. Is it possible that this has something to do with straining on the toilet? She has a history of TIAs (mini-strokes) but there doesn't seem to be any weakness on one side or anything like that. She has dementia, but she is typically very responsive to her environment. In these spells, she just sort of "zones out," can't move, and has to sit down. Any ideas? Thank you for any insights!