My dd has had a lot of nosebleeds, sb34, from toddlerhood. It's quite a blood bath, isn't it?? I took her to the Dr to be checked out and they said it's just one of those things. They referred her to an ENT clinic in case a vein in her nose needed cauterising but by the time we had the appt she hadn't had a nose bleed for months so they sent us away. Typically, of course, she then had one that night!!
Another GP later prescribed a homeopathic remedy for her and since then she definitely doesn't get them as often as before, nor are they are bad. HTH.