What are the symptoms of a typical panic attack and what brings them on?

Fight-Flight-Freeze!: All of the physical symptoms of anxiety are directly the result of the cascade of physiological events that get triggered when your primitive fear & rage brain centers sense danger. Learn about this "fight or flight or freeze" response. See: http://bit.Ly/wzhvqoonce you understand the physiology of anxiety, the symptoms make sense. This doesn't make them feel less unpleasant necessarily though!

Risks ; triggers.: Some things which can ^ risk for panic attacks include: previous abuse/ trauma as well as genetic predisposition. Traumatic brain injury, hyperthyroidism, hypoglycemia, mitral valve prolapse, recurrent hyperventilation, extreme physical activity, drug abuse ; use of stimulants may ^ risk. Acute stressors or chronic stress, illness, claustrophobia ; major life changes can also play a part.