The single most important distinction
Rejection sensitivity vs. RSD
These two terms get used interchangeably online, but they are not the same kind of thing. One is a measured research trait. The other is a popular name for its severe end. Getting this straight protects you from a lot of confident misinformation.
Researched construct
Rejection Sensitivity (RS)
- A validated psychological construct, studied for decades.
- Defined as the tendency to anxiously expect, readily perceive, and overreact to rejection.
- Introduced by Downey & Feldman in 1996, note: Downey, not "Dodson," and measured with the Rejection Sensitivity Questionnaire (RSQ).
- Backed by published, peer-reviewed research.
Downey & Feldman 1996
StudyImplications of rejection sensitivity for intimate relationships
Rejection sensitivity is a validated research construct, the tendency to anxiously expect, readily perceive, and overreact to rejection, measured by the Rejection Sensitivity Questionnaire.
View sourcePopular clinician term
Rejection Sensitive Dysphoria (RSD)
- A vivid name for the severe end of rejection sensitivity, especially as experienced by some people with ADHD.
- Commonly attributed to psychiatrist Dr. William Dodson.
- Not a formal diagnosis (not in DSM-5-TR or ICD-11) and has no validated, RSD-specific test.
- Supported mainly by clinical observation, not controlled trials.
How to hold both ideas
The cleanest way to think about it: rejection sensitivity is a dial that everyone has, set higher or lower. RSD is the word a lot of clinicians and communities use to describe what it feels like when that dial is turned way up and the response is sudden and intense.
Framing RSD as "a vivid name for the severe end of rejection sensitivity," rather than a separate, proven disorder, keeps you honest. It respects how genuinely painful the experience is while not pretending the science is more settled than it is.
Next: why RSD comes up around ADHD, and what is actually established there.