Anxiety, however, is excessive or inappropriate arousal characterized by feelings of apprehension, uncertainty, and fear. The word is derived from the Latin, angere, which means to choke or strangle. It is often not attributable to a real or appropriate threat and can paralyze the individual into inaction or withdrawal. Anxiety can also be a symptom of other psychologic or medical problems, such as depression, substance abuse, or thyroid disease.
Anxiety disorders are the most common psychiatric condition in the United States.
Nevertheless, only about a quarter of those who experience this problem seek help. Anxiety disorders are usually caused by a combination of psychological, physical, and genetic conditions, and treatment is, in general, very effective. Specific anxiety disorders are diagnosed based on the severity and duration of symptoms and on additional behavioral characteristics that accompany the symptoms of anxiety. It is very difficult to control worry. Some of these symptoms occur on most days for six months.