Experiencing Mute-ism In Therapy?

I would love to know if this is happening to anyone else. I am finding in therapy, at least once a session the past few weeks I go mute, i actually can t open my mouth to speak. And this can happen for as long as 10-15 minutes. It s really annoying, thats more than 1/4 of a session lost. Then, weirder still, when I do start to talk, weirder things like me going hoarse happen too. It usually happens when I m trying to talk about something difficult. But never happened before, when I... Experiencing Mute-ism In Therapy?
https://www.myptsd.com/c/threads/experiencing-mute-ism-in-therapy.50666/