RSD, at its core, is an intense and unpleasant reaction to real or perceived rejection. It often comes with the inability to control our focus and, for some, nearly nonstop rumination. It’s not just arguments with friends and family that gets us down, or a bad review at work, but even constructive feedback may cause someone with sensitivity to rejection to fall into self-image despair. But what you perceive to be rejection might not be rejection.