Answer:
Many things.
Explanation:
Blood pressure is a needed thing in a body. It gets blood to your organs and everywhere that needs it. If it didn't work, many things could happen.
<em><u>Too high BP(hypertension):</u></em>
If your blood pressure is too high, it can cause <em>ruptured vessels</em>, <em>heart attacks</em>, <em>strokes</em>, <em>heart failure</em>, which is where the heart enlarges too much to continue pumping blood at the adequate pressure/speed, <em>kidney disease/failure</em>, which would be from damage to the arteries around the kidneys, <em>vision loss </em>due to damage to the vessels in the eyes, <em>angina</em>, which is chest pain due to narrowed vessels in the chest, some forms of which may cause heart attacks.
<u><em>Too low BP(hypotension):</em></u>
If you're experiencing <em>hypotension</em>, there are many things commonly associated with it. These are <em>dizziness, fainting, nausea, blurred/fading vision, lack of focus, </em>and <em>fatigue. </em>If hypotension becomes extreme, it can cause someone to go into shock, which is life threatening and can and will cause death.