Agoraphobia & Social Anxiety Support Group
Agoraphobia is an anxiety disorder, often precipitated by the fear of having a panic attack in a setting from which there is no easy means of escape. As a result, sufferers of agoraphobia may avoid public and/or unfamiliar places. In severe cases, the sufferer may become confined to their home, experiencing difficulty traveling from this "safe place."
http://en.wikipedia.org/wiki/Mitral_valve_prolapse_syndrome#Mitral_valve_prolapse_syndrome
This website is the Society for MVPS - they have all the info:
http://www.mitralvalveprolapse.com/whatismvpmvpsd.html
"About 40 percent of patients with mitral valve prolapse also have an imbalance of the autonomic nervous system, or ANS, called dysautonomia. The ANS is composed of two systems; the parasympathetic and the sympathetic. It controls virtually all bodily functions, such as respiration, heartbeat, blood pressure, vision, and digestion. When this system is out of balance it can cause myriad symptoms, including panic attacks, anxiety, fatigue, palpitations, migraines, irritable bowel syndrome (IBS), and more. This combination of symptoms is known as MVP Syndrome. Diagnosis is made by physical examination, a careful medical history, and an echocardiogram. Unfortunately, MVP does not always show up on an echocardiogram. Thus, MVPS is a clinical diagnosis. Usually symptoms don't show up before the age of 14 or 15, but more and more children display central nervous system symptoms before the MVP shows up. Ninety-eight percent of people with MVP Syndrome/Dysautonomia have nothing wrong with their heart. The majority of symptoms are caused by an out-of-balance nervous system."