Yes. I stuttered severely when in grades school (under 10 years). It's not that I was bullied, but it was experiencing the "time standing still because I can't talk" moments - several times a day. It was traumatic, I wanted to socialize but I couldn't talk and it was infinitely frustrating. As a result - I have frequent "flashbacks" of some of the more embarrassing and humiliating incidents. The anxiety, sick to my stomach feeling whenever I have a phone call I have to make.. yes 100 times.