Several times my mom has gone bonkers wanting to call 911, screaming, hitting the steering wheel when I’m driving, etc… I finally realized it was because she was getting too hot. It seems like being too cold is uncomfortable, but being too hot is worth panicking about.
Even today she was getting restless and difficult in the car. So I turned up the a/c and she calmed down. Then at home she was getting really agitated. So again I made it cooler and that made a difference.
For her, hot is fearful. Very fearful.
Maybe your loved is the same. When erratic nervous behavior hits, it may just be the heat.
Or the need to use the bathroom.