Poverty and low education level tend to be associated with anxiety, but it is unclear if those factors cause or are caused by anxiety. While some statistics suggest that disadvantaged ethnic minorities tend to suffer from internalizing disorders like panic disorder less often than the majority population in the United States, other research shows that may be the result of differences in how ethnic groups interpret and discuss signs and symptoms of intense fright, like panic attacks. Also, panic and other anxiety disorders are thought to persist more for some ethnic minorities in the United States. Difficulties the examiner may have in appropriately recognizing and understanding ethnic differences in symptom expression is also thought to play a role in ethnic differences in the reported frequency of panic and other internalizing disorders.
Chest pain is always an alarming symptom, because most of us (appropriately) associate it with cardiac conditions, in particular  angina or a myocardial infarction (heart attack). However, chest pain can also be caused by a number of conditions that have nothing to do with the heart. And one of the more common non-cardiac problems that frequently produces chest pain is an anxiety attack.
People with panic disorder often worry about when the next attack will happen and actively try to prevent future attacks by avoiding places, situations, or behaviors they associate with panic attacks. Worry about panic attacks, and the effort spent trying to avoid attacks, cause significant problems in various areas of the person’s life, including the development of agoraphobia (see below).