What a powerful story. Medical PTSD is a thing that is so underestimated in the mental health community. Please have a backup plan so if you ever get in that dark place again, you have a list of things to do to try and pull yourself out of it. I honestly think sometimes that my “backup plan” is the reason I am still here. I wish you all the best, and I know you aren’t looking for a solution, but an ENT I once worked with (my daughter is deaf) did a successful (but very small) trial of bone anchored hearing aids to reduce stuttering. https://www.ncbi.nlm.nih.gov/pubmed/17075424