Here's an HSP "test" you can take: Are You Highly Sensitive? – The Highly Sensitive Person
My Therapist recommended it to me. My result was "yes" to HSP. My T then recommended that I check this video out:
Buy or Rent Sensitive-The Untold Story
It's set up like a documentary. Unfortunately, the video isn't free to watch, but maybe you can find it at a library or borrow it from someone. It's $4.99 to rent, $9.99 to buy.
They say that only 20% of the population are HSP's. Interesting, if nothing else...