I think that nose bleeds are just part of the way in which we are put together. I used to get them when I was 6 or 7, for no apparent reason, except that hot weather seemed to bring them on. Then - nothing, until 2003, when I had a few in fairly quick succession. I am now 74, and I have been told that the skin wears thin by the time one is in the 70s, which means that blood vessels are that much closer to the surface, and are more likely to burst. So, yes, maybe nose bleeds really are a part of getting old. Dearie me!