Following as I can feel my heartbeat all over too. Feet, body, head,and everything in between. Mentioned it to a doctor once, and he just said “that’s impossible.” So, in my former doctors point of view, we are impossible.
I experience the opposite. It FEELS like BP is high when you get those spikes but when you take it it's not.
I think that feeling of high BP when it's not high BP is related to the adrenaline/cortisol and how we tighten our body. All our little muscles that we don't realize in our neck, chest etc. That unconscious tightness has that feeling of what we think high BP feels like.
I know it might sounds like poppycock to you but I've been through this for years and years.