HI Thank for asking to HCM Just relax and no need to think about such a horrible disease, always think positive, this not the thing foe what you are thinking for sure, this is called epistaxis, and most of the time has got no reason very rarely it could be due to some systemic reason or local reason, but both of these reason can be detectable early in life of patient, to rule out the possibility of such entity your mother will required certain investigation, like blood test for clotting time bleeding time, platelate count, ct scan of head, for the vague pain try some NSAID and if does not give relief then have words with physician, take care of your mother, bye