Definition: A large class of mental disorders that includes seven disorders involving various problems associated with the experience of anxiety and fear. The anxiety disorders are:
- Specific phobia
- Social anxiety disorder (SAD)
- Panic disorder with and without agoraphobia
- Generalized anxiety disorder (GAD)
- Obsessive compulsive disorder (OCD)
- Acute stress disorder (ASD)
- Post-traumatic stress disorder (PTSD)
