Colbert ended his show late last year for a move to David Lettermanâs job at CBS. Other correspondents whose roles on the show shot them to stardom include actor Steve Carell and comedian John Oliver, who just started the second season of his HBO show Last Week Tonight.
3. Blood Disorders. Blood disorders such as hemophilia and leukemia can cause unexplained bruising, often because your blood fails to clot properly. If you have severe and frequent unexplained bruising, it's a good idea to see a physician to rule out such disorders, especially if it seemed to come on suddenly.
Bruises are usually black or blue marks on the skin that appear after a bump or injury. Blood from damaged blood vessels beneath the skin collects near the surface of the skin resulting in the appearance of bruising. As well as accidents and bumps, causes of bruises include: Bruises can occur in some people who exercise rigorously such as athletes and weightlifters. These bruises result from microscopic tears in blood vessels under the skin.