The 81-year-old Joe Biden suffered from a life-threatening aneurysm that had been misdiagnosed as a pinched nerve in February 1988. After having to take upwards of ten Tylenol a day to provide a modicum of pain relief, doctors discovered the dangerous warping of a blood vessel. If that vessel had burst, it would have likely been fatal. Biden underwent an emergency surgery to correct the condition and head off its potentially deadly consequences. An aneurysm is a warping in a blood vessel, commonly as a bulge or bubble. Aneurysms can fill with blood and subsequently rupture. When ruptured, aneurysms are...