HSP, or Highly Sensitive Person, is not an actual mental health diagnosis, but rather a group of characteristics (or personality traits) that describe a person who is more sensitive than "normal" to social, environmental and/or internal stimuli. HSP has been considered to be related to Sensory Processing Disorder.
A person with HSP may experience: - very strong emotions - difficulty letting go of past hurts - taking things personally - negative self-talk - anger or exhaustion in relationships - need for time alone; introverted - 'overthinking' - feeling socially awkward - difficulty receiving criticism - strong desire for justice - anxiety, worry (often about things beyond the individual's control) - avoiding news, horror films and other negative media - aversion to lights, noise, crowds, smells