I'm not sure, but I have had dp/dr for 8 yrs and it hasn't changed much for me. It has caused me a lot of depression and paranoia though.Like can it turn into some other mental illness or phsycially harm you??
I think if you get any other mental illness because of dp/dr, it would just be as a side effect.
I think that depends what you consider danger to be.Is derealization/depersonalization dangerous?!?!
As far as I am conserned it is very dangerous, just because of the potential it has to ruin your life. But I don't think that dp/dr can in anyway actually control your actions. Also I think that dp/dr is very different for each individual.