Zombie Eyes: What Causes Dark Circles Under Eyes And 6 Foods To Erase Them. Whether you have a full night of shut-eye or havenât slept in 24 hours, you find yourself plagued with dark circles. Concealers, eye creams, and eye exercises seldom tone down the shadowy effect of the dark or blue-black tints under your eyes. Now, before you succumb to the tall tales of an infomercial product, itâs important to know first what causes them.
Several medications, including Valtrex, are available to treat cold sores. Some are used topically (on the skin) and others are orally (by mouth), but the goal is to treat cold sores as early as possible.
How Long Do Cold Sores Last? Herpes-induced cold sores, also known as fever blisters, often break out on the lips or in the mouth. According to the NHS, untreated cold sores take approximately seven to ten days to heal. Medical specialists at the University of Maryland Medical Center believe that they last between two and three weeks, with some sores in people with weakened immune system lasting as long as six weeks.