I am also very accident prone...and at times it is worse than others. My T also said it was related to the PTSD. So I started documenting what I could...bruises, etc. It appears I have more accidents when I also have more dissociation. This is the more minor dissociation by the way...not outright switching (I have DID). My theory is that it has to do with being unaware of the actual physical boundaries of my body. Not that I am unaware of everything around me...more like my arm is 14 inches long with a hand attached at the end, but it seems like it is only 10 inches long...so I reach for something and knock it over, or hit my hand on it and get bruised. A couple years ago it was my head I did this with. Reaching under the kitchen cabinet I smacked my forhead on the edge of the counter top. Hard enough that I ended up on the floor (not knocked out, just knocked down!). I had no idea that I was in any danger of doing that...must have thought I was shorter?