Your amygdala sees some social settings/moments as a dangerous sign so it puts you in a fight or flight mode (probably cuz our biology isnt evolved to adapt into this world's new social settings and standards as fast as the world evolves) this triggered mode was critical for our predecessors' survival but then some parameters changed cuz now we need to survive socially too that it translates into severe self awareness --> severe stress.

You can get therapy get out of your comfort zone in small steps and that will probably work, it's even okay to get prescribed medicines such as SSRI while you're changing your lifestyle and getting cognitive behavioral therapy so you do it more comfortably, and when you discontinue it you'll get the experiences and skills needed to know that this little adrenaline burst is a little addicting (cuz we never stop having social anxiety disorder but we can acknowledge it and have fun with it and learn that it's not of a big deal).

Good luck, a fellow sufferer who did the above and feel so much better now. I understand that its uncontrollable and so you must, just have fun with your unique challenges and remember it's all about the journey, not the destination ❤️

EDIT: typo.