A person who has a personality disorder (such as Narcissistic Personality Disorder or Borderline Personality Disorder) always ...

Sometimes you just get a weird feeling about a person. They haven't done anything outright wrong, but you can't shake the idea that something is off. If you're feeling that way about someone you know, ...

The experience of losing the attention of another can leave children feeling sad, fearful, and even angry. Adults may witness tantrums in little ones, complaining in school-age children, and ...

My sister is beside herself thinking this friend is trying to take her place. I have reassured her many times, that is not possible.

Strong emotions can temporarily wipe out vision, study shows. April 21, 2010 — -- Jealousy can be so powerful that it can leave a person "functionally blinded," unable to see key images in their ...

Kendall Jenner opens up about feeling jealous of Kylie’s carefree youth and how their sibling bond has evolved over the years ...