Oh, there is no need to apologize for giving some history here. That is what these forums are all about, venting and getting support.

Yes, what can happen with PTSD is a kind of remission and then struggling again. I can't diagnose you of course, but I can say that people who struggle with PTSD can go through what you have described, being lost in their own heads, but also being able to be in "reality" too.

It doesn't sound like you had talk therapy when you saw someone about managing stress. Talk therapy would be with someone who understands emotional or physical abuse and how that can be traumatic to someone and how that person needs to talk about it and find out with the therapist how that experience has negatively affected them and how to overcome it.

IMHO, if a child experienced some challenges with a parent growing up, the affects of that will begin to show up in the mid to late teens when the individual's self esteem is being challenged. While late teens can be stressful anyway, it can be more difficult for a teen that constantly got negative messages growing up instead of constant encouraging messages.

If you "do" reach out for help, it is very important that the person knows you have a history of abuse so they don't misdiagnose you as just another struggling teenager. Parental abuse doesn't have to be physical, it could be all verbal or emotional or being around a very unpredictable parent that a child doesn't know what the parent may do or say next. IMHO, that is often what begins the challenge with "anxiety" in many children.

I think it is important to get help, you may not have post traumatic "disorder" yet, but may be more susceptible to developing it later on. With the right therapy and support, you can get your young developing brain on a much healthier track, instead of having to figure things all out on your own, being in your own head and confused at times. You do not want to end up choosing your own methods, unhealthy method to escape your challenges either. Too many people do that and
it never bodes well for them.

((Hugs))
OE