Anyways, knowing if you are hypertensive wasn't easy for me to spot. I had to consciously check my shoulders all the time, and sure enough, yeah, I can be hypertensive, and especially when experiencing mania. I am sure that over my lifetime I have had thousands of these. I can feel pressure events in my head, I can feel sensations or origin of where epileptic vibrations occur, and so on.
Brain damage triggered by mini-strokes detailed
http://www.sciencedaily.com/releases/2012/12/121212205720.htm
Microinfarcts are far more common than previously understood; it is believed that about 50 percent of individuals over the age of 60 have experienced at least one mini-stroke. Studies have also correlated the presence of mini-strokes with the symptoms of dementia. An estimated 55 percent of individuals with mild dementia and upwards of 70 percent of individuals with more severe symptoms show evidence of past mini-strokes. This association has led researchers to believe that these mini-strokes may be key contributors to age-related cognitive decline and dementia.
I can't find the article which suggests that microinfarcts are basically very common with most people. You get the idea though.
Hypertension can also mean a tightening of the arteries or vasoconstriction, rather than a relaxing.