I seem to recall you saying somewhere that you tend to fall upstairs, not down. This may be a sign of foot drop, where you are not lifting your
leg high enough and catch the bottom of the step. This has happened to me many times, but I have not had a full out episode of foot drop where I had to drag my leg.
I always make sure that I keep clear paths for walking in the house, with the lights on and use handrails. I also try to walk close to walls in case I lose my balance.