Most of the time, a twitchy eyelid or an irksome knee, is just that—no biggie. But there are instances when a seemingly insignificant health quirk may be your body’s way of saying, Hey there, let’s go to the doc. “Most people know the major symptoms of something like a stroke or heart attack, but sometimes you get weird presentations of serious problems,” says Jake Deutsch, M.D., founder and clinical Director of CURE Urgent Care in New York and an Attending Physician in the ER at Hackensack University Medical Center. Here are eight to watch for. Check-Ups Every Guy Needs >>> 1. A Cough that Won’t Quit If you get over a nasty cold and your cough lingers for weeks, you may have developed what’s called post-bronchitis syndrome. “It’s like asthma,” says Mitchell Gaynor, M.D., assistant clinical professor of medicine at Weill Cornell Medical College and author of The Gene Therapy Plan: Taking Control of Your Genetic Destiny with Diet and Lifestyle . “People think unless you’r