I'm open with my kids about my bp dx and meds. Not so much about past traumas, unless something comes up like they need to know during teen years that there is alcoholism risk that runs in our family.

Other traumas I wouldn't tell them because I don't want to worry them, they have enough going on just trying to grow up in the world. I wouldn't want them to have pictures stuck in their head of mom getting sexually assaulted, etc. But I do give warnings about dangerous people out there.