ruptured aneurysm

hi!need to know what triggers ruptured aneurysm?is it stress?or overfatigue?my mom died of it.

[skydnsr]

I am so sorry for your loss.

Sometimes stress will lead to high blood pressure, which can in turn contribute to the formation and eventual rupture of an aneurysm.  Higher blood pressure puts more, well, pressure on the vessel walls, and if there is a weak spot, that's where it will blow.  

It is also possible that stress did not have anything to do with it and that your mom was born with an abnormal blood vessel that was just destined to give out at some point.