In contrast, the term anxiety attack is not a specifier outlined in the DSM-5. Rather, anxiety is used to describe a core feature of multiple different anxiety disorders. The culmination of symptoms that result from being in a state of anxiety—such as restlessness, shortness of breath, increased heart rate, and difficulty concentrating—may feel like an “attack,” but are generally less intense than those experienced at the height of a panic attack.
The electrocardiograph in a person with panic attacks often shows tachycardia, but does not usually show any of the changes typically seen in people with heart attacks or angina. However, if significant risk factors for cardiovascular disease are present, a noninvasive evaluation to rule out coronary artery disease (CAD) may sometimes be a good idea.
NOTE: The Symptoms Listing section in the Recovery Support area of our website contains detailed information about most of the symptoms commonly associated with anxiety and panic. This information includes the sensations commonly experienced, whether it is an anxiety symptom or not, what causes them to occur, and what you can do to treat them. Much of this information isn’t found elsewhere.
If you think a friend or colleague at work is experiencing an anxiety disorder or other mental health difficulty, you should carefully consider how you react. Your actions in the workplace can have work-related and legal consequences. However, intervening early before an emergency situation arises can help prevent greater consequences for your colleague's career, health, and safety.

Selective mutism: A somewhat rare disorder associated with anxiety is selective mutism. Selective mutism occurs when people fail to speak in specific social situations despite having normal language skills. Selective mutism usually occurs before the age of 5 and is often associated with extreme shyness, fear of social embarrassment, compulsive traits, withdrawal, clinging behavior, and temper tantrums. People diagnosed with selective mutism are often also diagnosed with other anxiety disorders.