Having just admitting to my T that I was abused today, I may be a bit biased in my answer. However, I will say that my T did seem to think that sharing that part of my life makes a lot more of my issues make more sense to him and thinks in order to get past my anxiety and depression (which both have been terrible in the last 6 months) he seems to think I need to work through the abuse. Obviously, we are all different, but there maybe emotions tied into the abuse that are bringing you down even today.. So, maybe bringing up your csa may be a good idea.