Those who have a persistent fear about being judged in social situations that inhibits their normal functioning for at least six months may have social anxiety disorder, according to DSM-IV.
Generalized Anxiety Disorder (GAD)
Someone who suffers from continuous anxiety and chronic worry over both everyday and stressful situations likely has generalized anxiety disorder, according to DSM-IV.
Post-Traumatic Stress Disorder (PTSD)
People who experienced a traumatic event such as war, an accident or crime and experience flashbacks, sleeping problems and anxiety in the face of similar situations may have post-traumatic stress disorder (PTSD), according to DSM-IV.
A specific and intense period of physical and emotional discomfort, including symptoms such as fear of impending doom, sweating and dizziness likely indicates a panic attack and possible panic disorder, according to DSM-IV.
Those who have a clearly defined and expressed fear and anxiety-related reactions to specific situations (such as driving, having blood drawn or certain animals) may have a specific phobia, according to DSM-IV.
The Diagnostic and Statistical Manual, or DSM, is an American Psychiatric Association publication that outlines criteria for determining a number of mental disorders, including those related to excessive anxiety. As of November 2009, DSM was in its fourth edition and offered diagnostic criteria for several anxiety disorders.