Heredity, other biological factors, stressful life events, and thinking in a way that exaggerates relatively normal bodily reactions are all believed to play a role in the onset of panic disorder. Some research suggests panic attacks occur when a “suffocation alarm mechanism” in the brain is activated, falsely reporting that death is imminent. The exact cause or causes of panic disorder are unknown and are the subject of intense scientific investigation.

While the term "test anxiety" refers specifically to students,[29] many workers share the same experience with regard to their career or profession. The fear of failing at a task and being negatively evaluated for failure can have a similarly negative effect on the adult.[30] Management of test anxiety focuses on achieving relaxation and developing mechanisms to manage anxiety.[29]

Many people use the terms anxiety attack and panic attack interchangeable, but in reality, they represent two different experiences. The DSM-5 uses the term panic attack to describe the hallmark features of panic disorder or panic attacks that occur as a result of another mental disorder. To be considered a panic attack, four or more of the symptoms outlined in the DSM-5 must be present.
If you have Panic Disorder, the chances are very high that you have altered your life in some significant way in an effort to prevent or avoid additional panic attacks. It is common, for instance, for people to limit their travel; to restrict their driving (maybe staying within a certain radius from home, or avoiding highways); to avoid large, crowded shopping malls; and in general, to attempt to avoid any activity from which "escape" may be difficult.

Social anxiety disorder (previously called social phobia): People with social anxiety disorder have a general intense fear of, or anxiety toward, social or performance situations. They worry that actions or behaviors associated with their anxiety will be negatively evaluated by others, leading them to feel embarrassed. This worry often causes people with social anxiety to avoid social situations. Social anxiety disorder can manifest in a range of situations, such as within the workplace or the school environment.
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