In most cases, exercise can help relieve anxiety and panic. However, some people experience exercise-induced anxiety and panic attacks. In panic disorder, your body overreacts and believes there is a danger present when there is not.

If you've ever experienced a panic attack, you probably live in tremendous fear of the next. Panic attacks can feel like you're having a heart attack or dying. While vitamins are not a cure, certain nutrients may alleviate anxiety and possibly decrease the frequency of panic attacks.

Panic disorder and obsessive compulsive disorder, or OCD, are types of anxiety disorders. These conditions may cause panic attacks, compulsive behaviors and obsessive thoughts, sometimes resulting in a disabling impact on one's life. These disorders may be treatable with a combination of medication and psychotherapy.

A panic attack is the sudden onset of great fear that produces a bodily response. Common panic responses include sweating, shaking and choking. Panic attacks may be caused by psychological distress or medicinal drugs. When these episodes occur during sleep, they are called nocturnal panic attacks.

A nighttime, or nocturnal, panic attack is characterized by sudden waking and feelings of terror. Nocturnal panic attacks differ from night terrors because patients usually remember the attack in the morning.

A panic attack is an episode of intense fear that comes on suddenly, often for no apparent reason. In addition to emotional symptoms, panic attacks may cause a rapid heartbeat, sweating, breathing difficulties, abdominal pain and nausea.

Anxiety is described as a general feeling of worry, according to the University of Maryland Medical Center.

Panic attacks, a type of anxiety disorder, involve episodes of extreme anxiety or terror out of proportion to any actual threat.