1. a disorder marked by physical symptoms, with no organic basis, appearing as a result of anxiety and unconscious inner conflict 2. eating disorder of binge eating followed by vomiting, purging, and depression 3. absence of emotions; lack of interest or emotional involvement 4. external expression of emotion or emotional response 5. mood disorder with alternating periods of mania and depression 6. thinking is internally stimulated and ideas have a private meaning, fantasy is thought of as reality 7. loss of memory 8. active substance in marijuana 9. characterized by unpleasant tension, distress, and avoidance behavior; phobias, obsessive-compulsive disorder, and post-traumatic stress disorder 10. uncontrollable urge to perform an act repeatedly