Regardless of component, the Army conducts both operational and institutional missions. The operational Army consists of numbered armies, corps, divisions, brigades, and battalions that conduct full spectrum operations around the world. The institutional Army supports the operational Army.
Panic disorder is a type of anxiety disorder. It causes panic attacks, which are sudden feelings of terror when there is no real danger. You may feel as if you are losing control. You may also have physical symptoms, such as. Fast heartbeat. Chest or stomach pain. Breathing difficulty. Weakness or dizziness.
It's well known that anxiety can cause heart palpitations, and it's believed that the main cause may be an over-awareness of one's own heart, combined with surges of adrenaline that may occur at random in those with anxiety. These types of palpitations often trigger panic attacks. Panic attacks themselves can also cause palpitations. During a panic attack, two things occur that lead to rapid heartbeat: First, the sympathetic nervous system is on high alert, which may lead to a rapid increase in heart rate. Second, during panic attacks, people often have a tendency to hyperventilate.