dobrolvr wrote:
So, today at work, I was rehearsing in my head something that I was going to say to someone as I was walking down the hall, and I started speaking the first sentence aloud. Luckily no one else was around, because it wasn't just like muttering, it was actually in a normal tone as if I were speaking to someone else. Does anyone else have experience with this? This hasn't ever happened to me before...it was so involuntary...

I rehearse conversations a lot in my head, and sometimes do so out loud .. but that is usually voluntary.
However, when I'm very stressed the internal conversations my brain & I have can become externalised and that is definitely not voluntary. Like when I was in the hospital yesterday and ended up saying rather loudly "Just leave it in there you f*cking idiot". The nurse who was passing my room at the time gave me a really dirty look and said "pardon?". I had been trying to convince brain not to make me pull the drip out of my hand again ...
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Female. Dx ASD in 2011 @ Age 38. Also Dx BPD