A phobia is an overpowering and not logical fear of something or situation that poses little real threat but provokes anxiety and avoidance. If you have a phobia, you may experience a deep sense of distress or panic when you encounter the source of your fear. The fear can be of a certain place, situation, or object. Unlike general anxiety disorders, a phobia is usually connected to something specific. Such fears can interfere with your work, school, and personal relationships.