When MVP is symptomatic, the signs your body sends you are very similar to the warning signs of heart disease. You may feel tired or dizzy for no clear reason, have headaches, or experience sudden drops in blood pressure when you stand. Additionally, your own heartbeat may seem eerily noticeable, and your heart may feel like it's beating a mile a minute even if you're resting. Like with heart disease, you may feel pain or tightness in your chest.
It's safe to say that even if you think you're able to tell the difference between one heart disorder and another, you should seek medical attention if you notice any of these unusual symptoms and let the doctors sort it out. Doctors can't say for certain why MVP may give you a killer headache, and maybe it doesn't really matter. Your body is trying to tell you, "Hey pal, something's wrong!" Even the most bull-headed among us should be willing to listen to our own internal advice, right?
Men age 50 and up are most likely to have serious symptoms [source: NHLBI]. In our next section, you'll see that MVP's headaches, dizziness and crazy heart rhythms aren't actually all that common, even if MVP is.