An unofficial look at the highly sensitive pattern: depth, overstimulation, emotional responsiveness, and subtlety. Not a diagnosis.
Elaine Aron described a temperament pattern in public writing: depth of processing, overstimulation, emotional responsiveness, and sensitivity to subtlety. People search that pattern as an HSP test. This page uses original questions aimed at those four ideas. It is not the Highly Sensitive Person Scale, it does not reproduce that scale's items, and a score here is not her instrument.
A high result is not a diagnosis of autism, ADHD, anxiety, sensory processing disorder, or any other condition. Those have their own criteria and need a clinician when they limit your life. A low result is not a compliment and not an insult. Answer for a normal month, not for the week you were ill or heartbroken.
If you want trait scores instead, take the Big Five. If you want workplace pace, take the DISC assessment.