Yes and no. If it comes up naturally in the conversation, like someone says something about how all people with PTSD are crazy or discloses their own mental health struggle then yes. But I don't tend to offer it up without a reason. As what happened to me was not my fault, I see zero shame in it. But I also write about it publicly, so anyone who cares to Google me knows outright.
I haven't always been this open and had a literal meltdown (on here no less!) when I realized that PTSD comes up beside my name in the search box suggestions, along with other things I've done!
It makes dating a bit of a bear, but it's a bear anyway. If someone chooses not to get to know me because of it, that's their loss. Coming out with it has brought me closer to many friends who have since come to me and disclosed their own struggles.
To me, not telling my loved ones only hurts me more, and doesn't give them the opportunity to fully know me, which is also a big loss.