Social anxiety in teenagers is usually caused by an embarrassing experience, can develop over time due to self-esteem issues or can be caused due to genes, states AnxietyBC. The disorder usually begins at an early age and can negatively affect teenagers' mental state and how they interact with others.
Because teenagers are constantly worried about what their peers think of them, unlucky mishaps can lead to social anxiety because teenagers are reluctant to make a fool of themselves. Teenagers suffering from social anxiety are extreme self-conscious, shy in public settings and are constantly wary about how others perceive them, notes WebMD. Social anxiety can also be caused by family ties, as people suffering from the disorder often have other family members with the same condition.