Although nowhere near as emotionally harmful as having a parent with this disorder, growing up with a sibling with narcissistic personality disorder can be an extremely painful experience, particularly if that sibling is older than you are. Let’s look at the case of Lisa and Margo. Margo was 12 years Lisa’s senior and therefore was in a position to almost be a second mother to her baby sister. But Margo was so overcome by jealousy at the birth of the cute new interloper that she never really recovered from that trauma. Any motherly attributes that Margo may have possessed were … Continue reading →