I have come across a few friends (mainly on social media) who identify as Highly Sensitive. Of those friends, their children are naturally also HSPs, and I've seen a few articles about how they tend to be smarter, kinder, more aware of social injustice, etc. However, most of their experiences sound very normal to me (needing me time, feeling sad watching a film, etc).
My natural inclination is to think this is a bit of a fad to make some people feel a bit better about themselves, but I do have an open-mind.
Is being HSP a real thing, is it diagnosable professionally, and what is it like? Or is it a fad?