After a long day of traveling, mostly by plane, I woke up with a nosebleed. The last time a bloody nose roused me from sleep, I was learning long division. I thought it odd, but the dry air in planes can push an irritated nose over the edge and result in a nosebleed, and the altitude doesn't help the situation either. More of a nuisance than a medical problem, nosebleeds are dramatic but not Read more