I am 25 years old now, and I still get them occasionally. It is usually now from dry air. However, when i was a kid i got them all the time, and in spurts....i could go 2 months not having one, and then i would have one every day for a week. i went to one of the eye ear nose and throat specialists and had my nose cauterized at least 4 times, and it would work for awhile, but then start in again. they dont really come from picking the nose, or at least mine didn't. they could just randomy start while talking, or unfortunately, sleeping....its an inconvenience, but it really isn't a big deal, unless you are a hemopheliac