A sudden drop in blood pressure means vital organs may not be getting enough blood flow. Common causes include dehydration, heart problems, and internal bleeding. Decreased cardiac output can cause a ...

This content is sponsored by Inova Health. Every two seconds, someone in the United States needs blood. For 60 years, Inova Blood Donor Services has been the sole supplier of blood products to the ...

That sudden wave of dizziness or lightheadedness after rising from a chair or bed is something almost everyone experiences at some point. For most, it lasts only a few seconds and resolves on its own.