The get the better of evidence indicates that high blood pressure does not cause headaches or nosebleeds, except in the turn out that in the event of of hypertensive moment, a medical pinch when blood tension is 180/110 mm Hg or higher. If your blood burden is unusually high viagra without a doctor prescription you accept bane or nosebleed and are feeling unwell, wait five minutes and retest. If your reading remains at 180/110 mm Hg or higher, christen 9-1-1.