Anxiety disorders are a gaggle of mental disorders characterized by significant feelings of hysteria and fear. Anxiety may be a worry about future events, while fear may be a reaction to current events. These feelings may cause physical symptoms, like increased pulse and shakiness. There are several anxiety disorders, including generalized mental disorder, specific phobia, social mental disorder, separation mental disorder, agoraphobia, anxiety disorder, and selective mutism. The disorder differs by what leads to the symptoms a private may have quite one mental disorder.