When The 'Trust Hormone' Is Out Of Balance

http://www.npr.org/templates/story/story.php?storyId=126141922#
by Alix Spiegel NPR

Isabelle, 9, has a rare genetic disorder called Williams syndrome. One of the symptoms is that people have an inability to distrust anyone, even strangers. Isabelle often picks at her hands as a means of relieving stress.

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