Excessive levels of negative emotions, such as nervousness, tension, worry, fright and anxiety
Generalized anxiety disorder: vague, uneasy sense of general tension and apprehension that lasts for years
Panic disorder: pattern of anxiety in which long periods of calm are broken by intensely uncomfortable attacks of anxiety
Phobic disorder: intense, irrational fear
Specific phobia: fear of one specific thing
Social anxiety disorder: fear of social interactions, particularly those with strangers or those in which the person might be viewed negatively
Agoraphobia: fear of leaving one's home rooted in fear that further panic attacks will occur - associated with panic disorder
PTSD: experiencing anxiety, irritability, upsetting memories, dream, and realistic flashbacks of a traumatic event