The feared object/situation is avoided or endured with intense anxiety or distress. The avoidance, anticipation of, or distress of the phobic object/situation must cause significant distress or interferes with the individual's daily life, occupational, academic, or social functioning to meet diagnosis. The symptoms cannot be better accounted for by another mental disorder or be caused by substances, medications, or medical illness.
Because involuntary panic attacks can be caused by other medical conditions, such as mitral valve prolapse, thyroid problems, hyperglycemia, side effects from certain types of medications, recreational drug use (such as marijuana), stimulants, etc., it’s best to discuss your panic attacks and symptoms with your doctor to rule out any medical cause.

There is a long list of signs and symptoms of an anxiety attack. But because each body is somewhat chemically unique, anxiety attacks can affect each person differently. Consequently, anxiety attack symptoms can vary from person to person in type or kind, number, intensity, duration, and frequency. If your symptoms don’t exactly match this list, that doesn’t mean you don’t have anxiety attacks. It simply means that your body is responding to them slightly differently.