Not Sure What This Is

(Nothing triggering from what I know, but I do talk a lot about my internal thoughts in this)

I feel like I'm losing my sanity and I don't know why. I had several traumatic events happen throughout my life, but I think a few that happened this year pushed me over the edge. I have anger episodes a lot and they're quickly getting worse. I started going to a therapist, who required me to talk about a lot of traumatic events in detail. After I recollected those events, I found I suddenly have a hard time wording my thoughts or keeping a train of thought when I talk (for whatever reason, writing is mostly fine). When I do talk, I feel like someone else is talking instead of me and I feel like I have no control over what I say or do. I feel like I feel every emotion at once to the point that I feel numb. I'm starting to get the voices back in my head that I had when I was younger, and I'm having a hard time sleeping because I'm scared to. I've also been breaking down a lot more. Overall, I just feel mentally unstable and like I don't have control of myself.

I don't know if there's a possible name for this, I put it under this section of the forum because I think it goes beyond standard anxiety/depression. If anyone has an idea what this might be so I can research into it for more detail, I would appreciate it. I'm not expecting a final answer, just some research points I could look into and discuss with my therapist. This could also be a result of overthinking and I just need to stop overanalyzing.