Does baroreflex failure always cause high blood pressure spikes? whats the main symptoms?

Baroreflex failure: The purpose of the baroreflex control system is to keep blood flow to the brain constant by adjusting heart rate, microcirculation and heart contractility. When this fails BP can swing from 0 to 300 but on the average it does not cause high blood pressure but every wide swings in BP. So normally when BP goes up heart slows and contracts less hard. If BP falls rate goes up heart contracts more

No it does not: Baroreflex or Baroreceptor reflex is one of the body's homeostatic mechanism that helps to maintain Blood Pressure at nearly constant level It provide negative feedback when BP goes up for some reason and it reflexively causes the heart rate to decrease'And if BPdecreases it does the reverse and thereby maintain aconstant Blood Pressuse . But it does not cause high blood pressure spikes