Why does rejection feel physically painful when you have ADHD?

For many people with ADHD, rejection sensitivity is linked to differences in emotional regulation and threat processing in the brain. Emotional reactions can be faster, more intense, and harder to down regulate, which means social rejection or perceived criticism can trigger a strong stress response. This can activate the same neural pathways involved in physical pain, making the experience feel bodily and overwhelming. Many adults with ADHD also carry a long history of being misunderstood, corrected, or labeled as difficult, which amplifies sensitivity to rejection over time. This reaction is not oversensitivity or weakness. It is a neurobiological response shaped by lived experience and repeated social injury.