(NEWSER) – The first time Michael Spann cried blood, it "felt like I got hit in the head with a sledgehammer." It wouldn't be the last time. Blood began pouring out of Spann's eyes, nose, and mouth on a daily basis when he was 22, he tells the Tennessean. And though now, seven years later, it's slowed to a few times a week, the condition remains painful and debilitating. "Any job I get I lose because my eyes start bleeding," Spann says. Worst of all, it's totally unexplained.