I have mitral valve prolapse syndrome with dysautonomia, which has different symptoms. But in the last few weeks, I have been getting small itchy bumps that come and go - mostly on chest and back. From what I am reading, it seems like urticaria. Another symptom of the dysautonomia, besides palpitations (which I have learned to control- usually due to being dehydrated), is rhinitis. That started about two years ago. My concern here is the itchy bumps. They come and go in different locations.