I Have Blood Pressure That Is Erratic It Spikes To

I have blood pressure that is erratic It spikes to 185-190 over 85-110 It stays around 145/85 otherwise. I have strange symptoms that I worry about My forehead swells It is visually swollen looking I do have some discomfort from that Also I seem to sweat during the period of time when my forehead is swollen. It lasts for hours or days The doctors don't seem to know what to tell me or what to test for