Yes, this happens to me when I'm very hurt, angry, or depressed I struggle to express what I'm feeling and become catatonic for the most part. I also lose the ability to talk in social work settings and some group settings but that feels a little different in these settings I feel like a whisper stuck in my throat with the other one it's like nothing exists in my mouth, throat, body to make a voice come out.

Just keep swimming
I have BPD or Autism or both, we may never know, the focus is always the symptoms, not the diagnosis