Social anxiety disorder (SAD) is currently defined as having excessive anxiety that's not related to a medical condition. Should researchers change that definition for obese individuals?

Social anxiety -- a condition marked by heightened fears of interacting with others and of being harshly judged -- responds to psychotherapy, changing the way the brain looks in medical scans.

Patients studied by Brown University and the Rhode Island Hospital suffering from body dysmorphic disorder have shown real improvement in an eight-year span.