Thank you Paper Tiger for explaining the difference. You are right, in my case it is a fear of falling/depth
The comments that the various postings have rekindled memories I'd sooner not had - a hotel in Austin, TX that had the balcony over the inner atrium that scared me everytime I had to walk along it. Also a glass floor in a building that I couldn't walk on, or those suspended walkways in a certain computer company's offices near Heathrow airport (the one used in a Bond film).
I think I'll pop out tomorrow and buy a length of rope & a couple of karabinas (?) so I can keep myself attached to something
