what causes blood vessel damage
In addition, blood vessel damage in 59 people with mild memory problems who were included in the study were signs that they were at risk for Alzheimer's disease, the researchers added. Brickman noted that these areas of blood vessel damage are seen in most patients with Alzheimer's disease.
Very concerning: When a blood vessel bursts inside the brain, it bleeds into the surrounding space (or tissue). That causes increased pressure to surrounding structures which can cause significant damage. Smaller bleeds may cause less damage - unless they happen in more vital areas.