Have you ever heard of a cerebral Ischemia?

It’s any kind of neurological disorder in which the symptoms are caused by an obstruction of the blood vessels that prevents the supply of blood into the brain. Such as trombosis and embolism

And an Aneurysm?

It’s a vascular dilation in the shape of a balloon. It produces debilitations in the blood vessels, making them prone to breaking apart and it can be accompanied by an intense headache