Poison ivy is not contagious and is not spread like an infectious disease from person to person. However, it can spread if the oily chemical on one person's skin is touched by another person. Even if the oil is on a person's skin or clothing, anyone who comes in contact with the irritant may develop symptoms.
Amanda Seyfried and Social Anxiety. It's a strange thing how a lot of Hollywood actors and actresses can have self-esteem issues, just like normal poeple. We see these celebrities on TV and secretly wish that we looked almost as perfect as them. But then, who are we to blame them. These artists are just human too.
Anxiety itself may be considered hysteria, but the way people use the term tends to describe severe, emotional responses to their anxiety. All forms of anxiety, including obsessive compulsive disorder, generalized anxiety disorder, and more can have severe emotional reactions, and so they can all lead to hysteria.