quizproquo, that’s part of the problem....it seems that there is NOTHING to sort out....no circulatory problems, no underlying disease, no genetic component, nothing. So far as Achenbachs goes, it seems that you are more likely to get it if you are female and over 50 but that’s all and its not limited to females or over 50’s. Its doesn’t lead to anything, it doesn’t seem to be a risk factor for anything, its just something that seems to happen to some people....that’s why I posted the forum comments as well as the medical link.