I don't know, there's too much going on. I don't know what comes first and what triggers other responses. I remember being unable to walk down a steep pair of stairs when my POTS was very severe years ago. I can do that same set of stairs now.Do you think this is an ataxia, poor balance, or to do with difficulties processing visual info and proprioceptive info??
I have noticed that I lose my balance much more easily, and I can't cope with walking near drops/edges at all. I'm not scared of heights but I can't balance if there's a big drop. I found myself almost completely stuck at work (when I was still trying to work) when I was trying to go down the stairs from the 4th floor and the stairs had glass on one side.... I had to hold on the banister and not look out!