Agoraphobia (from Greek aγορά, "marketplace"; and φόβος/φοβία, -phobia) is an anxiety disorder, often precipitated by the fear of having a panic attack in a setting from which there is no easy means of escape. As a result, sufferers of agoraphobia may avoid public and/or unfamiliar places. In severe cases, the sufferer may become confined to his or her home, experiencing difficulty traveling from this "safe place."