Avoidant personality disorder

Definition:

A pattern of social discomfort, fear of negative evaluation, and timidity beginning in early adulthood.

Causes, incidence, and risk factors:

People with avoidant personality disorders form relationships with others only if they believe they will not be rejected. They are preoccupied with their own shortcomings. Loss and rejection are so painful that these people will choose loneliness rather than risking themselves in a relationship.