anxiety
collective term for group of nonspecific unpleasant mental states characterized by excessive fear and tension: Generalized Anxiety Disorder, GAD continuous anxiety > 6 months; panic disorder high-level anxiety that manifests itself as a sudden, intense panic attack, characterized by fear of losing control over body and mind with physical symptoms including sweats, tremor, difficulty breathing, and dizziness; obsessive compulsive disorder, OCD; mental disorder characterized by compulsive acts and obsessive thoughts.