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.
The raised area of a bump or bruise results from blood leaking from injured blood vessels into the tissues, such as muscle, as well as from the body's response to the injury. A purplish, flat bruise that occurs when blood leaks out into the top layers of skin is called an ecchymosis.iny blood vessels near the surface of the skin can burst from a bump, a scrape, or injection-any kind of physical distress. Bruises change color like a mood ring as they mature (from black and blue to green to yellow) and last about one week on the face and two weeks on the body.