Also called EDD — Emotional Dysregulation Disorder. Related to BPD and I’ve also read where it is related to C-PTSD.
Take these diagnoses with a grain of salt. You may just be surrounded by people so difficult to deal with that you seem like your reaction is over the top. This is something happening in my case. My reaction becomes a level 10 when the therapist thinks a level 3 is warranted. But they don’t comprehend the endurance of the frustration.