Apparently 40 percent of people with mitral valve prolapse have dysautonomia. I have mitral valve prolapse and I know I have dysautonomia due to various symptoms. There is a book called ‘confronting mitral valve prolapse syndrome’ by Lyn Fredrickson which explains it all. It was a life saver finding this book as I thought I was going mad having all these symptoms and not getting any answers from the doctors. The book also explains that although you were born with mitral valve prolapse the symptoms can be brought on later in life by a stressful life event like childbirth, bad virus etc.