Hello. I, myself, am ADHD, and have been diagnosed as such multiple times since 1986. This seems very familiar to me. For myself, i have had endless issues throughout my life where discussion leads me to extreme discomfort and needing to leave / absent myself from the situation. To this day, i struggle with inserting myself in a conversation naturally, and against feeling that everyone is ignoring me in conversation.
it's a lot. if that seems familiar, maybe look into that. you'll figure it out. promise.